BDS3115-116C

BACK UP RING
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About this product
The BDS3115-116C is a backup ring used alongside O-ring seals in hydraulic and pneumatic fittings. A backup ring is a thin, rigid ring that sits directly next to an O-ring inside a groove or gland. When fluid or air pressure pushes on the O-ring, the backup ring prevents the O-ring from being forced out of its groove into gaps between mating parts. By supporting the O-ring against pressure, the BDS3115-116C helps maintain a reliable, leak-free seal even under high-pressure conditions. It is made from a durable polymer material that resists wear, chemicals, and temperature extremes.
BDS3115-116C Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Life Limited Part: No
Lead Time: Stock
Certification: MANF COFC
8130/EASA Eligible: Yes
PRODUCT DESCRIPTION

BDS3115-116C

  • Rigid Support for O-Rings - Prevents the O-ring from extruding into clearances under pressure, maintaining seal integrity.

  • Durable Polymer Construction - Made from a high-strength material that resists most hydraulic fluids, oils, and cleaning solvents.

  • Consistent Thickness - Manufactured to tight tolerances so it fits snugly next to the O-ring without creating extra gaps or pressure points.

  • Easy Installation - Thin, flat design slides over the O-ring and sits flush in standard gland designs without special tools.


  • Placed next to O-rings in cylinder heads and rod glands to prevent O-ring extrusion when the cylinder is pressurized.

  • Supports O-rings in compressor or actuator fittings, ensuring airtight seals.

  • Used in fuel line couplings where high pressure could otherwise force the O-ring into small gaps.

  • Helps maintain reliable seals in fittings exposed to rapid pressure changes during retraction and extension.


  • What is the purpose of a backup ring?

A back-up ring sits next to an O-ring to stop it from being pushed into gaps between connected parts when pressure rises. It keeps the O-ring in place so it can continue to seal properly.

  • What materials is this ring compatible with?

It works with most O-ring materials and is resistant to hydraulic fluids, engine oils, and common cleaning solvents.

  • Does a backup ring affect pressure capacity?

Yes. By preventing O-ring extrusion, the backup ring allows the seal to handle higher pressures than an O-ring alone could withstand without damage.


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