O-Rings & Sealing Rings

About this collection

O-rings and sealing rings for oilfield flowline, pressure pumping, well service and industrial sealing applications. This collection includes common AS568 sizes and sealing rings used in oilfield equipment, repair kits and custom rubber sealing applications.

Available materials include Buna-N / NBR, HSN / HNBR and FKM / Viton®-type compounds. Standard sizes can be ordered online, while bulk quantities, special compounds and custom rubber parts can be quoted upon request.

Read the AS568 O-Ring Size and Gland Selection Guide before confirming a size or gland requirement.

Need confirmation before ordering? Request a Quote with the equipment reference, required quantity and application details.

Request a Quote
Assorted colored O-rings and sealing rings arranged on a white background

412 products

How to Select an AS568 O-Ring

An AS568 dash number defines standardized inch-series dimensions, but the dash number does not define material, hardness or application suitability.

Selection checklist

  • Confirm AS568 dash number, inside diameter and cross-section.
  • Check whether the gland is static or dynamic and review squeeze, stretch, clearance and surface finish.
  • Select compound and hardness for the fluid, gas, pressure, temperature and decompression conditions.
  • Verify backup-ring needs and equipment-specific approvals before installation.

Typical applications

Used in static and dynamic glands across hydraulic, pneumatic, valve, pump, oilfield service-tool and general industrial equipment when the groove is designed for the selected AS568 size.

The seal or repair kit does not determine the pressure rating of the complete assembly. Confirm the equipment model, figure, connection, working pressure, temperature and service fluid before ordering or installation.

Frequently asked questions

Does the same AS568 size fit every application?

The dimensions are standardized, but material, hardness, tolerance, gland design and service conditions still determine whether the O-ring is suitable.

Can color identify an O-ring material?

Not reliably. Color conventions vary by supplier and compound. Use the material specification, batch traceability and test data instead.

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