British Standards Institution

Source:: CEN
Committee:: ACE/69 - Aerospace hydraulic systems, fluids and components
Categories:: Aerospace fluid systems and components
Number of comments:: 0

Scope

This document specifies the characteristics of O-rings in fluorocarbon rubber (FKM), low compression set, hardness 80 IRHD, for aerospace applications.

They are intended to be used in air, mineral / synthetic oil and fuel systems.

Operating conditions - Temperature:

a) Continuous operation: −20 °C to +225 °C;

b) Static applications minimum temperature of use: −50 °C.

Limitation: not to be used with phosphoric ester type hydraulic fluids (permanent or temporary immersion).

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

29/05/2024

3. Public Comments

Public Comments start date:

13/06/2024

Public Comments end date:

06/08/2024

4. Comment Resolution

Comment Resolution start date:

19/08/2025

5. Approval

6. Publication

Publication start date:

06/11/2025

Learn more about the standards development process

Standards Development

BS EN 3049 Aerospace series - O-rings, in fluorocarbon rubber (FKM), low compression set - Hardness 80 IRHD

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