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BS 5106:2024

$142.49

Dimensions of spiral anti-extrusion back-up rings and their housings. Specification

Published By Publication Date Number of Pages
BSI 2024 25
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PDF Catalog

PDF Pages PDF Title
5 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Spiral back-up rings
4.1 Dimensions
8 Table 1 — Dimensions of spiral back-up rings
12 Figure 1 — Back-up ring
4.2 Material
4.3 Reference number
4.4 Other back-up ring types
13 5 Housing grooves
5.1 General
Table 2 — Housing groove dimensions
18 Figure 2 — Housing groove
19 5.2 Tolerance of nominal housing diameter
5.3 Working diametral clearance
5.4 Lead-in chamfer
5.5 Surface texture
20 Annex A (informative) Guidance on assembly
A.1 General
A.2 Assembly into a groove in a bore
Figure A.1 — Installation of back-up rings
21 A.3 Assembly into a groove on a shaft
22 Annex B (informative)Obsolete series of spiral back-up rings
Table B.1 — Dimensions of spiral back-up rings for 4.1 mm section diameter “O”‑rings (see Figure 1)
23 Table B.2 — Housing groove dimensions for 4.1 mm section diameter “O”-rings and associated spiral back-up rings [see Figure 2a) and Figure 2b)]
24 Bibliography
BS 5106:2024
$142.49