MANOY® Back-Up Ring

Type SKC

splitted version
MANOY® Back-Up Ring

Type SKS

MANOY® Back-Up Ring

Type SPR

MANOY® Back-Up Ring

Type STC

splitted version
MANOY® Back-Up Ring

Type STS

TECHNICAL DATAS

inner back-up inner back-up inner back-up inner back-up inner back-up
Motion Motion Motion Motion Motion
static, partially linear, partially rotary static, partially linear, partially rotary static, partially linear, partially rotary static, partially linear, partially rotary static, partially linear, partially rotary
Direction of pressure Direction of pressure Direction of pressure Direction of pressure Direction of pressure
unidirectional unidirectional unidirectional unidirectional unidirectional
Operating pressure (MPa) Operating pressure (MPa) Operating pressure (MPa) Operating pressure (MPa) Operating pressure (MPa)
60 100 25 100 100
Linear speed (m/s) Linear speed (m/s) Linear speed (m/s) Linear speed (m/s) Linear speed (m/s)
0,5 0,5 0,5 0,5 0,5
Diameter range (mm) Diameter range (mm) Diameter range (mm) Diameter range (mm) Diameter range (mm)
2 to 3000 2 to 3000 2 to 3000 2 to 3000 2 to 3000
Housing Housing Housing Housing Housing
non-split
(from 20 mm Ø) 		split

non-split
(from 10 mm Ø) 		non-split
(from 20 mm Ø) 		split

Type SKC inner back-up
Motion static, partially linear, partially rotary
Direction of pressure unidirectional
Operating pressure (MPa) 60
Linear speed (m/s) 0,5
Diameter range (mm) 2 to 3000
Housing non-split
(from 20 mm Ø)
Type SKS inner back-up
Motion static, partially linear, partially rotary
Direction of pressure unidirectional
Operating pressure (MPa) 100
Linear speed (m/s) 0,5
Diameter range (mm) 2 to 3000
Housing split
Type SPR inner back-up
Motion static, partially linear, partially rotary
Direction of pressure unidirectional
Operating pressure (MPa) 25
Linear speed (m/s) 0,5
Diameter range (mm) 2 to 3000
Housing non-split
(from 10 mm Ø)
Type STC inner back-up
Motion static, partially linear, partially rotary
Direction of pressure unidirectional
Operating pressure (MPa) 100
Linear speed (m/s) 0,5
Diameter range (mm) 2 to 3000
Housing non-split
(from 20 mm Ø)
Type STS inner back-up
Motion static, partially linear, partially rotary
Direction of pressure unidirectional
Operating pressure (MPa) 100
Linear speed (m/s) 0,5
Diameter range (mm) 2 to 3000
Housing split

APPLICATIONS

The MANOY® back-up ring is a solid or split ring which is rec­t­an­gu­lar or pro­fi­led in sec­tion. Various sec­tio­n­al pro­files and sizes are avail­ab­le in stan­dard or cus­to­mi­zed ver­si­ons. MANOY® back-up rings can also be used in dyna­mic app­li­ca­ti­ons – posi­tio­ned on both sides of the O‑ring for alter­na­ting pres­su­re.

STS series
Back-up ring, solid

  • For sta­tic app­li­ca­ti­ons, line­ar and heli­cal moti­on
  • The end­less form pre­vents dama­ge to the O‑ring
  • Also sui­ta­ble for X‑rings
  • For instal­la­ti­on in split groo­ves – also often pos­si­ble in non-split groo­ves

SKS series
Con­ca­ve back-up ring, solid

  • For sta­tic app­li­ca­ti­ons, line­ar and heli­cal moti­on
  • Litt­le defor­ma­ti­on of the O‑ring due to the con­ca­ve form, the­re­fo­re exten­ded ser­vice life and hig­her stress pos­si­ble
  • The end­less form pre­vents dama­ge to the O‑ring
  • For instal­la­ti­on in split groo­ves – also often pos­si­ble in non-split groo­ves

SPR series
Spi­ral back-up ring, two-lay­er

  • For sta­tic app­li­ca­ti­ons and line­ar moti­on
  • No open split if the­re is expan­si­on under pres­su­re
  • Adap­ta­ble to smal­ler cross-sec­tion dia­me­ters by shor­ten­ing
  • Also sui­ta­ble for X‑rings
  • Easy to install in non-split groo­ves

STC series
Back-up ring, split

  • For sta­tic app­li­ca­ti­ons and line­ar moti­on
  • Split pro­du­ced by smooth sepa­ra­ti­on, so the­re is no gap when instal­led
  • Expan­si­on under pres­su­re may cau­se the split to open and dama­ge the O‑ring; in this case the STS series is pre­fera­ble
  • Also sui­ta­ble for X‑rings
  • Easy to install in non-split groo­ves


SKC series
Con­ca­ve back-up ring, split

  • For sta­tic app­li­ca­ti­ons and line­ar moti­on
  • Advan­ta­ges of the con­ca­ve form as for the SKS series
  • Expan­si­on under pres­su­re may cau­se the split to open and dama­ge the O‑ring; in this case the SKS series is pre­fera­ble
  • Easy to install in non-split groo­ves

CHARACTERISTICS

Sys­tem advan­ta­ges:

  • Pro­duc­tion costs can be redu­ced due to lar­ger clearan­ce gap 
  • Pre­vents metal con­tact 
  • Com­pen­sa­tes clearan­ce gap and cross-sec­tion varia­ti­ons cau­sed by pres­su­re expan­si­on, ther­mal expan­si­on, play and dis­pla­ce­ment
  • Allows the use of pre­cisi­on O‑rings of medi­um hard­ness 
  • Sui­ta­ble for almost all fluids 
  • Avail­ab­le for any cross-sec­tion dia­me­ter and for indi­vi­du­al groo­ve dimen­si­ons 
  • Easy to install
  • Inex­pen­si­ve com­po­nent with a mas­si­ve effect

TEMPERATURE RANGE

From ‑200 to +200 °C

but depen­dent on the back-up ring mate­ri­al in each case.

MATERIALS

IDG back-up ring mate­ri­al

  • 01A (PTFE)
  • 03A (PTFE/glass)
  • 62A (PTFE/carbon)
  • H12 (Ther­mo­plastic)
  • D12 (Ther­mo­plastic)
  • A12 (Ther­mo­plastic)
  • P50 (Ther­mo­plastic)

Mate­ri­al descrip­ti­on and other mate­ri­als for wider app­li­ca­ti­ons FIND OUT MORE >