ACM

Poly­acry­la­te rub­ber

ACM are co-poly­mers pro­du­ced from dif­fe­rent acry­lic esters with mono­mers necessa­ry for curing. Low elasti­ci­ty and poor cold fle­xi­bi­li­ty, unsui­ta­ble for elec­tri­cal app­li­ca­ti­ons. Dif­fi­cult to pro­cess.

Che­mi­cal resis­tan­ce:

  • Mine­ral oils (motor and gear oils, ATF oils), up to 150°C
  • Oxy­gen, ozone and gene­ral wea­the­ring
  • Low gas per­mea­bi­li­ty

Non-resistant:

  • Gly­col-based bra­ke fluids
  • Aro­ma­tics and chlo­ri­na­ted hydro­car­bons
  • Acids, alka­lis and ami­nes
  • Hot water and steam
CR

Chloro­bu­ta­di­e­ne rub­ber

Syn­the­tic rub­ber, gene­ral­ly metal oxi­de cured. Is self-extin­guis­hing, high alter­na­te ben­ding strength, medi­um oil resis­tan­ce. 
Good mecha­ni­cal pro­per­ties and elasti­ci­ty. Low com­pres­si­on set.

Che­mi­cal resis­tan­ce:

  • Par­af­fin based mine­ral oils (e.g. ASTM oil No. 1)
  • Water and aque­ous solu­ti­ons (at medi­um tem­pe­ra­tures)
  • Ref­ri­ger­ants (ammo­nia, car­bon dioxi­de, fri­gen, fre­on, chlo­ri­ne, R12, R13, R21, R113, R114, R115)
  • Sili­co­ne based oils and grea­ses
  • Good resis­tan­ce to heat
  • Ozone, age­ing, gene­ral wea­the­ring

Non-resistant:

  • Aro­ma­tic hydro­car­bons
  • Chlo­ri­na­ted hydro­car­bons
  • Polar sol­vents (keto­nes, ethers, ace­to­ne)
EPDM

Ethy­le­ne-pro­py­len­e­die­ne rub­ber

Syn­the­tic rub­bers, per­oxi­de or sul­fur cured. 
Low britt­leness tem­pe­ra­tu­re, flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Hot water, steam, con­den­sa­te
  • Gly­col-based bra­ke fluids
  • Anti-free­zes (wit­hout oil addi­ti­ve)
  • Hydrau­lic fluids based on aque­ous poly­mer solu­ti­ons and phos­pha­te esters
  • Many orga­nic and inor­ga­nic acids
  • Deter­gents and clea­ners, sodi­um and pot­as­si­um alka­lis
  • Phos­pha­te ester based hydrau­lic fluids (HFD‑R)
  • Sili­co­ne oils and grea­ses
  • Many polar sol­vents (alco­hols, keto­nes, esters)
  • Sky­drol 500 and 7000
  • Ozone, gene­ral wea­the­ring and age­ing (black com­pounds only)

Non-resistant:

  • Mine­ral oil pro­duc­ts (oils, grea­ses, fuels, emul­si­ons)
  • Tri­gly­ce­ri­des
EU

Poly­e­ther ure­tha­ne

Very high resis­tan­ce to tear and abra­si­on and notch strength, high elasti­ci­ty even on hard end pro­duc­ts, per­ma­nent defor­ma­ti­on at hig­her tem­pe­ra­tures, flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Mine­ral oils and grea­ses (addi­ti­ves can attack the mate­ri­al)
  • Mine­ral oil based lub­ri­cants
  • Sili­co­ne based oils and grea­ses
  • Water up to 50°C
  • Ozone and age­ing

Non-resistant:

  • Keto­nes, esters, ethers, alco­hols and gly­cols
  • Hot water, steam
  • Alka­lis, ami­nes and acids
FFKM

Per­fluo­ri­na­ted rub­ber

Out­stan­ding resis­tan­ce to extre­me­ly aggres­si­ve che­mi­cals, high tem­pe­ra­tu­re resistant, steam resistant.

Che­mi­cal resis­tan­ce:

  • Simi­lar to PTFE
  • Ali­pha­tic and aro­ma­tic hydro­car­bons
  • Chlo­ri­na­ted hydro­car­bons
  • Polar sol­vents (e.g. ace­to­ne, methyl ethyl keto­ne, ethyl ace­ta­te and dio­xa­ne)
  • Inor­ga­nic and orga­nic acids
  • Water, steam
  • High vacu­um: Very low loss in weight

Non-resistant:

  • Com­pounds con­tai­ning fluo­ri­ne (e.g. ref­ri­ger­ants R11, 12, 13, 113, 114 etc.)
FKM

Fluo­ri­na­ted rub­ber

Excel­lent oil and che­mi­cal resis­tan­ce, out­stan­ding resis­tan­ce at very high tem­pe­ra­tures, very good ozone resis­tan­ce, medi­um mecha­ni­cal strength. Accep­ta­ble volu­me swell in aro­ma­tics. Does not sustain com­bus­ti­on.

Che­mi­cal resis­tan­ce:

  • Mine­ral oils and grea­ses
  • Low swel­ling in ASTM oil Nos. 1 to 3
  • Phos­pha­te ester based hydrau­lic fluids
  • Fire-resistant hydrau­lic fluids in HFD group
  • Sili­co­ne oils and grea­ses
  • Vege­ta­ble and ani­mal oils and fats
  • Ali­pha­tic hydro­car­bons (petrol, buta­ne, pro­pa­ne and natu­ral gas)
  • Aro­ma­tic hydro­car­bons (ben­ze­ne, tolue­ne)
  • Chlo­ri­na­ted hydro­car­bons (tri­chlo­roethy­le­ne, car­bon tetra­chlo­ri­de)
  • Fuels (pre­mi­um gra­de fuels, die­sel fuel and fuel oil) and fuels con­tai­ning metha­nol
  • Con­cen­tra­ted inor­ga­nic and orga­nic acids and alka­lis
  • High vacu­um
  • Ozone, gene­ral wea­the­ring and age­ing

Non-resistant:

  • Polar sol­vents (ace­to­ne, methyl ethyl keto­ne, ethyl ace­ta­te, dio­xa­ne)
  • Sky­drol 500 and 7000 …
  • Gly­col based bra­ke fluids
  • Ammo­nia gas, ami­nes, alka­lis
  • Super­hea­ted steam
  • Low mole­cu­lar weight orga­nic acids (for­mic and ace­tic acid)
FVMQ

Fluo­ro­si­li­co­ne rub­ber

Syn­the­tic rub­ber cross-lin­ked by per­oxi­de. Good elec­tri­cal insu­la­ting pro­per­ties. Its phy­si­cal pro­per­ties are main­tai­ned over a wide tem­pe­ra­tu­re ran­ge. Medi­um mecha­ni­cal strength. Notch sen­si­ti­ve. Excel­lent high and low tem­pe­ra­tu­re resis­tan­ce in dry heat. Good oil and fuel resis­tan­ce, flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Ali­pha­tic motor and gear oils (e.g. ASTM oil No. 1)
  • Aro­ma­tic mine­ral oils (ASTM oil No. 3)
  • Fuels
  • Aro­ma­tic hydro­car­bons (ben­ze­ne, tolue­ne)
  • Ani­mal and vege­ta­ble oils and fats
  • Gly­col based bra­ke fluids
  • Fire-resistant hydrau­lic fluids HFD‑R and HFD‑S
  • High mole­cu­lar weight chlo­ri­na­ted aro­ma­tic hydro­car­bons (chlo­ro­di­phe­nyl; coo­l­ants for trans­for­mers)
  • Water up to 100°C
  • Dilu­te salt solu­ti­ons
  • Ozone, gene­ral wea­the­ring and age­ing

Non-resistant:

  • Super­hea­ted steam (> 120°C)
  • Acids and alka­lis
  • Sili­co­ne oils and grea­ses
  • Low mole­cu­lar weight chlo­ri­na­ted hydro­car­bons (tri­chlo­roethy­le­ne)
HNBR

Hydro­gena­ted acry­lo­ni­tri­le buta­di­e­ne rub­ber

Syn­the­tic elas­to­mer pro­du­ced by cata­ly­tic hydro­ge­na­ti­on from NBR, per­oxi­de cured. Excel­lent phy­si­cal pro­per­ties, even at high tem­pe­ra­tures. Very good abra­si­on resis­tan­ce. Low com­pres­si­on set, very good hot air resis­tan­ce, low vapour and gas per­mea­bi­li­ty. Flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Ali­pha­tic hydro­car­bons
  • Vege­ta­ble and ani­mal oils and fats
  • HFA, HFB and HFC fluids
  • Many dilu­te acids, bases and salt solu­ti­ons at low tem­pe­ra­tures
  • Water and steam up to 150°C
  • Ozone, gene­ral wea­the­ring and age­ing

Non-resistant:

  • Chlo­ri­na­ted hydro­car­bons
  • Polar sol­vents (e.g. keto­nes and esters)
  • Strong acids
NBR

Acry­lo­ni­tri­le-buta­di­e­ne rub­ber

Syn­the­tic elas­to­mer, sul­fur cured. Good mecha­ni­cal strength, low per­ma­nent defor­ma­ti­on under pres­su­re. Good age­ing pro­per­ties and low abra­si­on. Short elon­ga­ti­on. Flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Mine­ral oil based lub­ri­cants and hydrau­lic fluids inclu­ding their aque­ous emul­si­ons
  • Ali­pha­tic hydro­car­bons (pro­pa­ne, buta­ne, petrol, mine­ral oils and grea­ses, die­sel fuel, fuel oil)
  • Vege­ta­ble and ani­mal oils and fats
  • HFA, HFB and HFC fluids
  • Many dilu­te acids, bases and salt solu­ti­ons at low tem­pe­ra­tures
  • Water up to 80°C

Non-resistant:

  • Fuels with a high aro­ma­tic con­tent (e.g. pre­mi­um gra­de fuel)
  • Aro­ma­tic hydro­car­bons (ben­ze­ne)
  • Chlo­ri­na­ted hydro­car­bons (tri­chlo­roethy­le­ne)
  • Polar sol­vents (keto­nes, ace­to­ne, ace­tic acid ethy­le­ne ester)
  • Strong acids
  • Gly­col based bra­ke fluids
  • Ozone, gene­ral wea­the­ring and age­ing)
VMQ

Sili­co­ne rub­ber

Syn­the­tic elas­to­mer, per­oxi­de cured. Good elec­tri­cal insu­la­ti­on pro­per­ties. The phy­si­cal pro­per­ties are retai­ned over a wide tem­pe­ra­tu­re ran­ge. Phy­sio­lo­gi­cal­ly neu­tral. Medi­um mecha­ni­cal strength. Notch sen­si­ti­ve. Sen­si­ti­ve to the effec­ts of hot water and steam. Very high heat and cold resis­tan­ce in dry heat, flamm­a­ble.

Che­mi­cal resis­tan­ce:

  • Ali­pha­tic motor and gear oils (e.g. ASTM oil No. 1)
  • Ani­mal and vege­ta­ble oils and fats
  • Gly­col based bra­ke fluids
  • Fire-resistant hydrau­lic fluids HFD‑R and HFD‑S
  • High mole­cu­lar weight chlo­ri­na­ted aro­ma­tic hydro­car­bons (Chlo­phen and chlo­ri­na­ted diphe­nyl (coo­l­ants for trans­for­mers)
  • Water up to 95°C
  • Dilu­te salt solu­ti­ons
  • Ozone, gene­ral wea­the­ring and age­ing

Non-resistant:

  • Super­hea­ted steam (> 120°C)
  • Acids and alka­lis
  • Sili­co­ne oils and grea­ses
  • Low mole­cu­lar weight chlo­ri­na­ted hydro­car­bons (tri­chlo­roethy­le­ne)
  • Aro­ma­tic mine­ral oils
  • Fuels
  • Aro­ma­tic hydro­car­bons (ben­ze­ne, tolue­ne)
PTFE

Poly­te­tra­fluo­roethy­le­ne

PTFE (poly­te­tra­fluo­roethy­le­ne) is a semi-crystal­li­ne mate­ri­al wit­hin the group of ther­mo­plastics.

As PTFE, unli­ke other ther­mo­plastics, can­not be pro­ces­sed above its mel­ting tem­pe­ra­tu­re, semi-finis­hed pro­duc­ts and parts are pro­du­ced in a sin­te­ring pro­cess.

PTFE fea­tures high che­mi­cal resis­tan­ce, out­stan­ding ther­mal pro­per­ties from 200°C to +260°C, anti-adhe­si­ve beha­viour and a low coef­fi­ci­ent of fric­tion to name but a few.

Modi­fied PTFE

Modi­fied PTFE dif­fers from regu­lar PTFE by a shor­ten­ed mole­cu­lar chain and an added co-poly­mer. This fur­ther com­ple­ments the posi­ti­ve pro­per­ties of regu­lar PTFE.

  • Lower ten­den­cy to cold flow
  • Redu­ced poro­si­ty and smoot­her sur­faces
  • Lower gas per­mea­bi­li­ty (per­mea­ti­on)
  • Welda­bi­li­ty
Com­pounds based on regu­lar or modi­fied PTFE

Com­pounds are mix­tures of a base mate­ri­al (regu­lar or modi­fied PTFE) with addi­tio­nal orga­nic and inor­ga­nic aggre­ga­tes. The­re is no dis­so­lu­ti­on or che­mi­cal com­bi­na­ti­on bet­ween the­se sub­s­tan­ces. So com­po­un­ding results in a homo­ge­ne­ous mix­tu­re of two or more sub­s­tan­ces.

The aim of com­po­un­ding is to opti­mi­se the pro­per­ties of the com­po­und for spe­ci­fic app­li­ca­ti­ons com­pa­red to regu­lar or modi­fied PTFE. The focus is on rai­sing wear resis­tan­ce, lowe­ring cold flow under load, redu­cing wear of the coun­ter­part, lowe­ring ther­mal expan­si­on, impro­ving ther­mal con­duc­tivi­ty, and enhan­cing detec­ta­bi­li­ty.

The fol­lo­wing aggre­ga­tes, for examp­le, can be used in vary­ing pro­por­ti­ons for com­po­un­ding:

  • Fib­re­glass
  • Car­bon and car­bon fib­re
  • Bron­ze
  • Stain­less steel
  • High-per­for­mance ther­mo­plastics

POLY­URE­THA­NE

IDG mate­ri­als U43, U57, U93, U94, U95, U96, U99, …

Poly­ure­tha­ne seals fea­ture very high per­for­mance, espe­ci­al­ly high mecha­ni­cal values, abra­si­on resis­tan­ce, high fle­xi­bi­li­ty and very good resis­tan­ce to ozone and aging. Fur­ther­mo­re, poly­ure­tha­ne moul­ded parts have very good rebound capa­ci­ty and high gas tight­ness.

They offer very good fuel resis­tan­ce and resis­tan­ce to many oils com­mon­ly used in tech­no­lo­gy, espe­ci­al­ly to oils with hig­her aro­ma­tic con­tent.

Poly­ure­tha­ne seals have a long ser­vice life thanks to good tem­pe­ra­tu­re resis­tan­ce and excel­lent resis­tan­ce to oxy­gen and ozone. Poly­ure­tha­ne the­re­fo­re clo­ses the gap bet­ween soft elas­to­mers and britt­le plastics.

Depen­ding on requi­re­ments, modi­fied PUR types with spe­ci­fic pro­per­ties are avail­ab­le

  • Sli­de-modi­fied
  • Cold-sta­ble
  • Detec­ta­ble
  • Sui­ta­ble for food con­tact
UHMW-PE

IDG mate­ri­als H11, H12, H13, H43, …

UHMW-PE is a semi-crystal­li­ne ther­mo­plastic with excel­lent not­ched impact strength, abra­si­on resis­tan­ce, and tear strength values.

UHMW-PE is the ide­al mate­ri­al for use in water. The abra­si­on resis­tan­ce is five to ten times hig­her than for pure PTFE, which is why the mate­ri­al is the first choice for app­li­ca­ti­ons in abra­si­ve envi­ron­ments. The mate­ri­al is sta­ble in all hydrau­lic fluids and offers high resis­tan­ce to acids, bases and aggres­si­ve media.

It offers limi­ted resis­tan­ce to aro­ma­tic and halo­gena­ted hydro­car­bons and stron­gly oxi­di­zing acids (e.g. nitric acid, chro­mic acid).

Depen­ding on requi­re­ments, modi­fied UHMW- PE types with spe­ci­fic pro­per­ties are avail­ab­le

  • Detec­ta­ble
  • Sui­ta­ble for food con­tact
POLY­AMI­DE

IDG mate­ri­als A12, A13, …

Poly­ami­des are semi-crystal­li­ne ther­mo­plastics clas­si­fied accord­ing to dif­fe­rent types (PA6, PA66, PA12). A dis­tinc­tion is made in the pro­duc­tion of semi-finis­hed pro­duc­ts bet­ween the extrusi­on and mono­mer cas­ting pro­ces­ses.

With a view to the per­for­mance of the mate­ri­al, the extrusi­on pro­cess nega­tively impac­ts the mate­ri­al pro­per­ties. She­ar stres­ses occur­ring during pro­duc­tion result in chain breaks in the poly­mer matrix. The mate­ri­als pro­du­ced in the mono­mer cas­ting pro­cess, howe­ver, have a hig­her level of crystal­lini­ty and the­re­fo­re much bet­ter mate­ri­al pro­per­ties than the extru­ded types.

So only cast poly­ami­des are used for IDG mate­ri­als. They fea­ture very good impact beha­viour, high mecha­ni­cal dam­ping capa­ci­ty, tough­ness, high dimen­sio­nal sta­bi­li­ty, very high wear resis­tan­ce, good sli­de and dry-run­ning pro­per­ties, as well as extre­me­ly low water absorp­ti­on, very good creep rup­tu­re strength, hydro­ly­sis resis­tan­ce, and good resis­tan­ce to che­mi­cals.

Depen­ding on requi­re­ments, modi­fied mate­ri­al types with spe­ci­fic pro­per­ties are avail­ab­le

  • Detec­ta­ble
  • Sui­ta­ble for food con­tact
PEEK

IDG mate­ri­als P43, P50, P80, …

PEEK is a semi-crystal­li­ne high-tem­pe­ra­tu­re resistant ther­mo­plastic. It meets the hig­hest requi­re­ments in terms of con­ti­nuous ser­vice tem­pe­ra­tures up to 260°C, che­mi­cal resis­tan­ce to almost all orga­nic and inor­ga­nic che­mi­cals, hydro­ly­sis resis­tan­ce, sli­de and wear beha­viour, radia­ti­on resis­tan­ce and fire beha­viour.

This mate­ri­al also has very good sli­ding pro­per­ties and dis­plays high wear resis­tan­ce, even under high ther­mal load.

Unsta­ble in the pre­sence of UV radia­ti­on in com­bi­na­ti­on with atmo­s­phe­ric oxy­gen, con­cen­tra­ted nitric acid, con­cen­tra­ted sul­phu­ric acid, aci­dic oxi­di­zing media, some halo­gena­ted hydro­car­bons and ali­pha­tic hydro­car­bons at ele­va­ted tem­pe­ra­tures.

PEEK is used for high­ly stres­sed parts in medi­ci­ne, che­mi­stry, indus­try, sports, and aero­space. For examp­le, sli­de bea­rings and sli­de rings, seals, O rings, slee­ves, housings, pis­tons, insu­la­tors, bob­bins, pump parts, val­ves.

Depen­ding on requi­re­ments, modi­fied mate­ri­al types with spe­ci­fic pro­per­ties are avail­ab­le

  • Sli­de-modi­fied
  • Fib­re-rein­forced
  • Detec­ta­ble
  • Sui­ta­ble for food con­tact
POLY­IMI­DE

IDG mate­ri­als Y14, Y15, …

Poly­imi­de (PI) is an extre­me­ly high-per­for­mance, non-mel­ting ther­mo­set plastic that can with­stand per­ma­nent ther­mal stress as well as extre­me mecha­ni­cal stress.

It is free of plasti­cisers, low out­gas­sing, extre­me­ly dimen­sio­nal­ly sta­ble and wear resistant, non-flamm­a­ble and resistant to many che­mi­cals.

Poly­imi­de fea­tures high long-term resis­tan­ce to both UV and radioac­tive radia­ti­on.

Fabric-rein­forced plastics

IDG mate­ri­als G12, G13, …

Fabric-rein­forced plastics are com­po­si­te mate­ri­als made of fabric and imp­reg­na­ting resin and pos­si­b­ly addi­tio­nal lub­ri­cants. Fabric-rein­forced plastics are main­ly used as pis­ton or rod gui­de ele­ments to pre­vent metal­lic con­tact bet­ween the com­pon­ents and to absorb trans­ver­se forces that may occur.

Depen­ding on the mate­ri­al selec­ted, gui­de ele­ments made of fabric-rein­forced plastics fea­ture very high com­pres­si­ve strength, high elasti­ci­ty, vibra­ti­on-dam­ping, good fric­tio­n­al beha­viour, stick-slip-free move­ment, excep­tio­nal­ly good wear pro­per­ties and good media resis­tan­ce.

Impro­ving the per­for­mance cha­rac­te­ris­tics of elas­to­mer parts

Pre­cisi­on O rings, X rings or other elas­to­mer parts can be pre­pa­red for spe­cial requi­re­ments with the appro­pria­te sur­face tre­at­ments.

Typi­cal requi­re­ments are low fric­tion, sepa­ra­bi­li­ty, ease of assem­bly (auto­ma­ted as well as manu­al), lifel­ong lub­ri­ca­ti­on, smooth run­ning or the non-stick effect.

Coa­ting is a com­mon­ly used sur­face tre­at­ment pro­cess tech­no­lo­gy. This can be done by machi­ne or manu­al­ly, depen­ding on the requi­re­ments.

Manoy­Coat® coated O rings offer spe­cial advan­ta­ges for assem­bly and dis­as­sem­bly thanks to their sli­ding effect.

In the case of auto­ma­ted assem­bly, the coa­ting enab­les trou­ble-free fee­ding. Some of the coa­tings are also sui­ta­ble for sta­tic or dyna­mic app­li­ca­ti­ons.

Food com­pa­ti­ble ver­si­ons and tho­se free of any sub­s­tan­ces that impair paint wet­ting (Paint-Wet­ting Impairment Sub­s­tan­ces, PWIS) round off the adap­ta­bi­li­ty of the­se O rings for spe­cial requi­re­ments.

Manoy­Coat® coa­tings are avail­ab­le with the fol­lo­wing pro­per­ties *

  • Easier assem­bly
  • Sepa­ra­bi­li­ty
  • Redu­ced fric­tion in use
  • Sui­ta­ble for metal­lic mating sur­faces
  • Sui­ta­ble for plastic mating sur­faces
  • Sui­ta­ble for gaseous media
  • PWIS-free ver­si­on pos­si­ble on request
  • Sui­ta­ble for food con­tact
  • FDA com­pli­ant
  • EU 1935/2004 com­pli­ant
  • With UV indi­ca­tor (visi­ble in UV light)
  • Elastic sur­face coa­ting

* Depen­ding on the type of coa­ting, several pro­per­ties may also be ful­fil­led tog­e­ther.