Static Radial Applications
Information is based on ISO 3601
* Pneumatic applications typically do not use a Back-up ring.
Static Axial (Face) Applications
Internal Pressure: O-ring OD = Gland OD
External Pressure: O-ring ID = Gland ID
Information is based on ISO 3601.
Reciprocating Applications
Information is based on ISO 3601
* Pneumatic applications typically do not use a back-up ring.
| For piston applications groove width (w) values do not apply for 001-003 and 400-424 series O-rings. |
| For rod applications groove width (w) values do not apply for 001-003, 028-050, 135-178, 232-284, 350-395, 400-424, and 430-475. |
| For rotary applications contact our engineering team at engineering@hitechseals.com |
Groove Details
Piston & Rod Applications
Hardware Conditions
The metal hardware specifications of the O-ring gland and any mating part has a significant impact on the life and sealing performance of the O-ring. The following are general fluid sealing surface roughness values for glands using elastomeric O-Rings:
For a static mating surface: Ra 32 µinch maximum
For a dynamic mating surface: Ra 3-12 µinch
The recommended minimum shaft hardness is 50 HRC (Hardness Rockwell C).
O-Ring Tolerances (Non-Standard)
Information based on ISO 3601 Non-Standard Class A O-Rings.
*Based on DIN 3771.
Machining information and tolerances for various standards are available through Hi-Tech Seals.
Information provided in this catalogue is meant to aid with seal selection process.
Contact us for assistance in designing an application.