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.
Classification: Gaskets,washers & other seals
NSN 6645-01-522-7447
NSN 5950-00-626-6578
NSN 5905-01-578-6517
NSN 5945-00-222-5974
NSN 5998-00-276-1144
NSN 6645-01-378-5260
NSN 5945-01-430-2222
NSN 6130-01-103-7454
NSN 6610-00-027-8406
NSN 5935-01-529-7007
NSN 5950-01-326-5873
NSN 5925-00-812-1987