MANOY® Back-Up Ring

Type SKA

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MANOY® Back-Up Ring

Type STA

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TECHNICAL DATAS

axial outer sealing axial outer sealing
Motion Motion
partially linear, partially rotary, static partially linear, partially rotary, static
Direction of pressure Direction of pressure
unidirectional unidirectional
Operating pressure (MPa) Operating pressure (MPa)
100 100
Diameter range (mm) Diameter range (mm)
7 to 3000 7 to 3000
Housing Housing
split

split

Type SKA axial outer sealing
Motion partially linear, partially rotary, static
Direction of pressure unidirectional
Operating pressure (MPa) 100
Diameter range (mm) 7 to 3000
Housing split
Type STA axial outer sealing
Motion partially linear, partially rotary, static
Direction of pressure unidirectional
Operating pressure (MPa) 100
Diameter range (mm) 7 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.

SKA series
Exter­nal back-up ring, con­ca­ve

  • For sta­tic app­li­ca­ti­ons, inter­nal pres­su­re
  • Litt­le O‑ring defor­ma­ti­on due to the con­ca­ve form, the­re­fo­re exten­ded ser­vice life and hig­her stress pos­si­ble
  • Easy to install in non-split groo­ves

STA series
Exter­nal back-up ring

  • For sta­tic app­li­ca­ti­ons, inter­nal pres­su­re
  • Also sui­ta­ble for X‑rings
  • 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 >