BS EN 4114:2023
Aerospace series. Clamps, loop ("P" type) in aluminium alloy with rubber cushioning. Dimensions, masses

Standard No.

BS EN 4114:2023

Release Date

2023

Published By

British Standards Institution (BSI)  GB  /  BSI

Latest

BS EN 4114:2023

Introduction

Core changes and technological evolution of the standard

BS EN 4114:2023 is the replacement version of EN 4114:2009. The main technical changes include:

• Comprehensive update of normative reference documents
• Material code FPM is uniformly changed to FKM
• Added wedge version (Form W) structural specification

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Key characteristics analysis

Material system specification

Cushioning material code	Elastomer type	Standard basis	Identification color
S	Silicone rubber (VMQ)	EN 2261	Rust
F	Fluorosilicone rubber (FVMQ)	EN 3825/3826	Blue
V	Fluorocarbon rubber (FKM)	EN 2566	Brown

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Dimension and Tolerance System

The standard defines 58 diameter codes for ferrules from 03 to 60. The key dimensional parameters include:

• Pipe outer diameter da: 12.7-52.4mm (tolerance ±0.4mm)
• Mounting hole type: round (R) and slotted (H)
• Quality benchmark: The calculation benchmark is based on the density of silicone rubber 1.23g/cm³

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Implementation and application suggestions

Selection decision matrix

Working condition factors	Silicone rubber (VMQ)	Fluorosilicone rubber (FVMQ)	Fluorocarbon rubber (FKM)
Temperature range	-60~200℃	-60~175℃	-20~200℃
Oil resistance	Medium	Excellent	Excellent
Cost-effectiveness	Optimal	Medium	High

Special Note: When the operating temperature exceeds 80℃, special evaluation is required and FKM material should be considered.

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Marking and traceability requirements

According to EN 2424, the marking must include:

1. Standard number (such as EN 4114)
2. Diameter code (20H means slot type 20mm specification)
3. Buffer material color identification
4. Metal belt surface treatment color code

BS EN 4114:2023 Referenced Document

• EN 2261 Aerospace series - Silicone rubber (VMQ) - Hardness 70 IRHD
• EN 2424 Aerospace series - Marking of aerospace products
• EN 2437 Aerospace series - Chromate conversion coatings (yellow) for aluminium and aluminium alloys*， 2026-06-07 Update
• EN 2566 Aerospace series - Fluorocarbon rubber (FKM) - Hardness 70 IRHD
• EN 2693 Aerospace series - Aluminium alloy AL-P5086 - H111 - Sheet and strip - 0,3 mm <= a <= 6 mm
• EN 3825 Aerospace series - Fluorosilicone rubber (FVMQ) - Hardness 60 IRHD
• EN 3826 Aerospace series - Fluorosilicone rubber (FVMQ) - Hardness 70 IRHD
• EN 4115 Aerospace series - Cushion, rubber for clamps - Dimensions, masses

BS EN 4114:2023 history

• 2023 BS EN 4114:2023 Aerospace series. Clamps, loop ("P" type) in aluminium alloy with rubber cushioning. Dimensions, masses
• 2009 BS EN 4114:2009 Aerospace series - Clamps, loop (''P'' type) in aluminium alloy with rubber cushioning - Dimensions, masses
• 2001 BS EN 4114:2001 Aerospace series. Clamps, loop ("P" type) in aluminium alloy with rubber cushioning. Dimensions and masses

Standard and Specification