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 5895-00-729-5479
NSN 5905-00-945-5274
NSN 2925-00-167-6762
NSN 6135-00-170-8819
NSN 5950-01-634-0677
NSN 6320-01-232-4664
NSN 6145-01-367-1404
NSN 5998-01-213-1379
NSN 6135-01-353-3802
NSN 5835-01-200-8932
NSN 5905-01-339-7330
NSN 5985-01-160-6600