4730-00-703-1782 RUBBER,ISOLATION Index 4730-00-703-1784 INSERT SET,SOUND ISOLATION

National Stock Number:
5330-00-703-1783

Federal Supply Class:
5330

National Item Identification Number:
007031783

Description:
PACKING,PREFORMED

Detail:
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see WASHER (as modified) and GASKET. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; and SEAL, NONMETALLIC, SPECIAL SHAPED SECTION. For circular (with aperature) nonmetallic items with a solid round cross-section see O-RING. Excludes CUP, COMPRESSION; GASKET; WASHER (as modified); and FELT, MECHANICAL, PREFORMED.


Manufacturer Information:
578-4801-1574159PC7ASSYK80064NAVAL SHIP SYSTEMS COMMAND
7800-010PC7ASSYK24664JONAL LABORATORIES INC
7800-010PC7ASSYK83212MANUFACTURED RUBBER PRODUCTS COMPANY
7800-010PC7ASSYK87585SRC ELASTOMERICS, INC.
7800-010PC7ASSYK96169ELECTRIC BOAT CORPORATION


Techincal Specification:
CENTER HOLE DIAMETER4.688 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLECUP
MATERIALRUBBER SYNTHETIC OVERALL
PERIPHERAL DIAMETER7.000 INCHES NOMINAL
RIM SURFACE WIDTH0.406 INCHES NOMINAL


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