Cap Seal / Piston Seal

For sealing at temperatures over 300°F (149°C) and pressures exceeding 50,000 psi. Cap seals consist of a thermoplastic (typically PTFE based) outside diameter sealing ring and an elastomeric o-ring acting as an energizer for low pressure sealing.

Specs

Pressure [High]

Dynamic Service Speed [High]

Seal Directionality [Bidirectional]

Manufacturing Method [Combination]

Common modifications custom combinations energizer and cap materials

Catalog Standards n/a varies by OEM

Customizable Yes

Comparative cost: $$

Special Applications

Comparitively inexpensive intermediate technology for high P:V applications. Temperature limited by elastomer properties. Low running/breakout friction properties

More Seal Types

Check valve duckbill, umbrella, ball

Check valve duckbill, umbrella, ball
Boots & Bellows

Boots & Bellows
Sanitary Gaskets / Tri Clamp / HyClamp / Tri Clover

Sanitary Gaskets / Tri Clamp / HyClamp / Tri Clover
Custom Profile Seal / Custom Molded Shapes

Custom Profile Seal / Custom Molded Shapes
Encapsulated o-ring / Encapsulated D-Ring / Encapsulated square ring

Encapsulated o-ring / Encapsulated D-Ring / Encapsulated square ring
Overmolded

Overmolded
Co-Extrusion Seals, Cost Savings With Functionality - Darcoid

Co-Extrusion Seals, Cost Savings With Functionality - Darcoid
Thermal and RF Shielding Elastomers - Darcoid

Thermal and RF Shielding Elastomers - Darcoid
Cut Shapes, Sheet/Foam Gaskets

Cut Shapes, Sheet/Foam Gaskets
Our Metal O-Ring Seals Are Ideal for Extreme Applications - Darcoid

Our Metal O-Ring Seals Are Ideal for Extreme Applications - Darcoid

Let's
build.

You need to get your best product designed, validated, specified, ramped and released. We’ve got your back, from concept through zero defect supply programs. It starts with understanding what you need the seal to do. We’re ready to get started.

Request a Quote