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Mineparts and Seals
Unit 1, 11 Karratha Street, Welshpool WA 6106
O-RINGS

O-RINGS

Description

MPS Import and stock a large range of Imperial and Metric O-Rings from approved and globally recognised manufacturers in standard NBR and high spec materials for various industries.

O-Rings
O-Rings
Profile Material Temp Pressure Prod No
96 NBR 70A or 90A
Aflas
Viton FKM
Silicone
HNBR
EPDM
Polyurethane
PTFE TEFLON
Encapsulated
Neoprene
FDA Approved
AS4020
-40° - +220° F O’ring Groove Design
As important as the o’ring seal itself is the groove that the o’ring seats into. The groove must be designed to accommodate not just the o’ring size, but also its intended usage; be it dynamic or static operation, radial or axial loading, vacuum or high pressure.

The following information is a guide for o’ring groove dimensions for both static and reciprocating dynamic applications. The info is based on 70 Shore A Durometer hardness only.

Surface Finish
Generally surface finish for sealing surfaces are as follows…

63RMS maximum: For non-critical sealing surfaces such as groove sides
32RMS maximum: For static sealing on critical sealing surfaces such as groove base and top.
16RMS maximum: For dynamic sealing surfaces and for sealing gases in a face type sea
ORI/ORM
Static Seals
Static Seals
Profile Material Temp Pressure Speed Prod No
96 Nitrile
Urethane
PTFE
Nylon
Acetal
-22° - +212° F 0 - 7250
PSI
3 FT/ SGS
Application For These Machines
  • Excavator
    Excavator
  • Backhoe-Loader
    Backhoe-Loader
  • Loader
    Loader
  • Dozzer
    Dozzer
  • Bull Dozzer
    Bull Dozzer
  • Crane
    Crane
  • Forklift
    Forklift
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