1S-0669
88.55mm Inner Diameter Backup Ring
88.55mm ID anti-extrusion backup ring for hydraulic seals.
Description
Backing up an elastomeric O-ring stops it from getting chewed up or squeezed into clearance gaps under pressure surges. Sits in the seal groove immediately behind the primary rubber ring, bridging the metal clearance gap to maintain seal geometry…
Overview
Backing up an elastomeric O-ring stops it from getting chewed up or squeezed into clearance gaps under pressure surges. Sits in the seal groove immediately behind the primary rubber ring, bridging the metal clearance gap to maintain seal geometry.
Features
- Inside diameter: 88.55 mm
- Hard backup material stops O-ring extrusion under pressure spikes
- Sized to bridge gland clearances accurately
Applications
- Hydraulic cylinders
- directional control valves
- high-pressure fluid manifolds
Specifications
| Brand | Caterpillar |
|---|
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