MIL-S-21520C (Wep)
3.
REQUIREMENTS
Description - The intertube seals are ring-shaped
3.1
devices constructed of nylon fabric impregnated with a Buna
Neoprene compound. The seals are used for isolating the
space between two nominally concentric tubes from external
conditions of sea water and air pressure.
General
Requirements
3.2
Preproduction Sample - Unless otherwise specified
3.2.1
in the contract or Order, preproduction samples of the up-
per and lower seals shall be manufactured using the methods
and procedures proposed for the production lot. These sam-
ples will be tested as specified in section 4 herein and
are for the purpose of determining that the production item
meets the requirements of this specification (refer to 4.2.1).
At the discretion of the procuring agency, the requirement
for a preproduction sample may be waived and shall then be
satisfied by substitution of a production unit chosen at
random by the Government Inspector.
Materials - Unless otherwise specified in con-
3.2.2
tract, equisition, or order, all materials and purchased
parts entering into the final assembly of the upper and
lower seals shall conform strictly to the detailed require-
ments indicated on the drawings and specifications listed
in BuWep Dwg 2024829 or 2025022,
Finishes, Coatings, Construction, and Dimensions -
3.2.3
Finishes, coatings, constructions and dimensions for the
upper and lower seals shall be in accordance with the appli-
cable drawings, specifications, and publications listed in
BuWep DWg 2024829 Or 2025022.
3.2.4
Marking - Marking of seals shall be in accordance
with applicable BuWep DWg 2024829 or 2025022.
Interchangeability - Individual assemblies and
3.2.5 .
piece parts of assemblies fabricated in agreement with -
their applicable drawings and specifications shall be inter-
changeable with like-numbered parts.
-4-
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business