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 5998-00-235-7483
NSN 6150-00-483-9088
NSN 5920-01-361-8835
NSN 4140-01-083-4489
NSN 5925-00-283-1410
NSN 5975-01-165-7048
NSN 6320-01-054-3046
NSN 6650-01-590-3670
NSN 6135-01-069-8575
NSN 5985-01-287-2450
NSN 6620-01-272-7831
NSN 5965-01-367-6483