IS 9975 (Part 1) Specification for O-rings - dimensions
ReplacedNo longer current. Use the replacement shown.
- Edition
- IS 9975 (Part 1):1981
- Publisher
- IS
- Part family
- Seals & O-rings
- Reviewed
- 27 October 2026 · source checked
- Use instead
- IS 17891 (Part 1)
Is IS 9975 (Part 1) still current?
No, it has been replaced. IS 9975 (Part 1) has been replaced by IS 17891 (Part 1) (MechAtlas review: 27 October 2026). Use the replacement for new work, and check differences before interchanging parts.
What it covers
Old Indian O-ring size standard.
Parts that use IS 9975 (Part 1)
- O-ring (India (IS), old)
Round-section rubber ring in a groove that seals static or slow-moving joints in hydraulic, pneumatic and pump parts.
Withdrawn, superseded by IS 17891 (Part 1).
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for IS 9975 (Part 1) or the IS store.
Open in MechAtlasCheck a drawing callout
Other seals & o-rings standards
- DIN 3771-1 Replaced
Fluid systems - O-rings - dimensions - IS 5129 (Part 1) Replaced
Rotary shaft lip type seals - nominal dimensions and tolerances - API 682 Current
Pump shaft sealing systems - ARPM OS-4 Current
Application guide for radial lip type shaft seals - DIN 3760 Current
Rotary shaft lip seals, types A/AS - DIN 3761 Current
Lip seals, automotive/heavy duty types - DIN ISO 3601-1 Current
O-rings - part 1 (ISO 3601-1:2012 + Amd 1:2019) - EN 12756 Current
Mechanical seal principal dimensions (ex DIN 24960) - IS 17891 Current
Fluid power systems - O-rings (parts 1 to 5) - IS/ISO 6194-1 Current
Rotary shaft lip seals - nominal dimensions and tolerances - ISO 21049 Current
Pump shaft sealing systems - ISO 3601-1 Current
O-ring sizes, tolerances, designation