Methods for determination of density and relative density of polytetrafluoroethylene (PTFE) tubing for aerospace applications

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-02-1985

Publisher

British Standards Institution

National foreword
Committees responsible
Method
0 Introduction
1 Scope and field of application
2 Definitions
3 Apparatus
4 Immersion liquids
5 Specimens
6 Procedures
Table
Liquid systems for density gradient columns
Figure
Preconditioning cycle for method C procedure

Specifies three methods for the determination of the density and relative density of PTFE tubing used in the manufacture of medium and high pressure hose assemblies for aerospace applications: 1. Density gradient column method without a preconditioning heating and cooling cycle. 2. Water displacement method. 3. Density gradient column method with a preconditioning heating and cooling cycle.

This International Standard specifies three methods for the determination of the density and relative density of polytetrafluoroethylene (PTFE) tubing used in the manufacture of medium and high pressure, high temperature, PTFE hose assemblies for aerospace applications:

Method A – Density gradient column method without a preconditioning heating and cooling cycle.
Method B – Displacement of water and determination of change of weight method.
Method C – Density gradient column method with a preconditioning heating and cooling cycle.

Committee	ACE/69
DevelopmentNote	Also numbered as ISO 7258 Supersedes 81/80541 DC (08/2005) Reviewed and confirmed by BSI, January 2015. (12/2014)
DocumentType	Standard
Pages	8
PublisherName	British Standards Institution
Status	Current

SAEITC TSC 47-012 ISSUE 4:2018	POLYTETRAFLUOROETHYLENE (PTFE) HOSE ASSEMBLIES (WIRE REINFORCED) FOR MEDIUM AND HIGH PRESSURE FLUID SYSTEMS IN AIRCRAFT
96/707468 DC : DRAFT JUN 1996	ISO/DIS 8829-1 - AEROSPACE - TEST METHODS FOR POLYTETRAFLUOROETHYLENE (PTFE) INNERTUBE HOSE ASSEMBLIES - PART 1: METALLIC (STAINLESS STEEL) BRAID
DEFSTAN 47-12/4(1987) : 1987	POLYTETRAFLUOROETHYLENE (PTFE) HOSE ASSEMBLIES (WIRE REINFORCED) FOR MEDIUM AND HIGH PRESSURE FLUID SYSTEMS IN AIRCRAFT

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BS M 56:1985

Methods for determination of density and relative density of polytetrafluoroethylene (PTFE) tubing for aerospace applications

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

Category

Subcategory