BS EN 2795-2018 PDF

Full title and description

STB BS EN 2795-2018 — Aerospace series: Fluorocarbon rubber (FKM) — Low compression set — Hardness 50 IRHD. This designation indicates the European (EN) technical specification adopted by national bodies (BS/other national prefixes) that sets material property requirements for a specific FKM elastomer grade intended for aerospace use.

Abstract

This standard specifies the required properties and specification limits for a fluorocarbon elastomer (FKM) formulation characterized by a low compression set and a nominal hardness of 50 IRHD, for components and sealing applications in aerospace installations. It defines material property requirements, relevant test methods and normative references to ensure consistent performance for aerospace procurement and testing.

General information

• Status: Published / Definitive (national adoptions available).
• Publication date: 2018 (EN publication March–April 2018; specific national publication dates vary — e.g., EN publication March 2018; BS adoption shown April 2018).
• Publisher: European Committee for Standardization (CEN) — adopted and published nationally by member bodies (e.g., BSI for BS EN versions).
• ICS / categories: 49.025.40 (Rubber and plastics; elastomers for aerospace applications).
• Edition / version: 2018 edition (EN 2795:2018).
• Number of pages: Typically a short technical specification (commonly published as 6–10 pages by national bodies; many national PDFs show 6 pages).

Scope

EN 2795:2018 applies to fluorocarbon rubber (FKM) formulations intended for aerospace applications where a low compression set and hardness of 50 IRHD are required. The standard sets property limits, indicates required tests and references relevant general standards for rubber nomenclature and fluid exposure testing. It is intended to harmonize material acceptance criteria across aerospace suppliers and purchasers.

Key topics and requirements

• Material designation and identification for a specific FKM grade with nominal hardness 50 IRHD.
• Requirement of low compression set performance (criteria and test conditions defined or referenced).
• Referenced test methods and normative documents (examples: EN 3207 for rubber compounds, ISO 1629 for rubber nomenclature, ISO 1817 for effect of liquids on vulcanized rubber).
• Typical acceptance checks and property verification (hardness measurement in IRHD, compression set measurement, and compatibility tests with fluids relevant to aerospace use).
• Application-specific notes for seals, O-rings and other elastomer components used in aircraft systems where fluid/temperature resistance and low set are critical.

Typical use and users

Primary users include aerospace materials engineers, OEMs and suppliers of seals and elastomer components (O-rings, gaskets), procurement/specification teams in aviation companies, test laboratories verifying material compliance, and national standards bodies implementing the EN text. The standard is used to specify and validate FKM material lots for use in fuel, hydraulic and environmental sealing applications where low compression set and defined hardness are required.

Related standards

Commonly referenced or related documents include EN 3207 (Aerospace series — Rubber compounds — Technical specification), ISO 1629 (rubber nomenclature), ISO 1817 (determination of effect of liquids on vulcanized rubber), and other aerospace-materials EN/ASD-STAN documents that define compound testing and acceptance practices. National adoptions (BS EN, DIN EN, UNE-EN, etc.) carry identical technical content.

Keywords

EN 2795; BS EN 2795; FKM; fluorocarbon rubber; low compression set; hardness 50 IRHD; aerospace elastomers; seals; O-rings; material specification; IRHD; compression set.

FAQ

Q: What is this standard?

A: EN 2795:2018 is a European aerospace series standard that specifies the properties of a fluorocarbon elastomer (FKM) with a low compression set and a nominal hardness of 50 IRHD; national bodies publish identical texts as BS EN, DIN EN, UNE-EN, etc.

Q: What does it cover?

A: It defines material property requirements, acceptance-related tests or references to test methods, and related nomenclature/compatibility standards for FKM formulations intended for aerospace sealing applications.

Q: Who typically uses it?

A: Aerospace OEMs, elastomer compounders and suppliers of seals, procurement and specification engineers, and test laboratories verifying conformance to aerospace material requirements.

Q: Is it current or superseded?

A: The 2018 edition (EN 2795:2018) is the adopted edition in force since 2018; national adoptions show it as the current / definitive text (check your national standards body for the latest confirmation or any subsequent amendments). Some national catalogs list confirmation actions in later years (e.g., confirmation entries in 2024); always verify with your national standards body for the absolute current legal/adoption status.

Q: Is it part of a series?

A: Yes — it is part of the broader “Aerospace series” of material and test specifications (EN/Aero series) that cover rubber compounds, testing methods and material properties used in aviation and aerospace supply chains. National versions carry the same series identification (BS EN, DIN EN, etc.).

Q: What are the key keywords?

A: FKM, fluorocarbon rubber, low compression set, 50 IRHD, aerospace, seals, O‑rings, material specification, compression set testing, IRHD hardness.