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 5975-01-329-0894
NSN 6685-01-433-7958
NSN 5985-01-285-4719
NSN 5960-01-486-8919
NSN 5930-01-243-0654
NSN 6145-00-411-0813
NSN 2925-00-639-6677
NSN 5925-01-415-3084
NSN 5855-01-191-3404
NSN 6620-01-097-7078
NSN 5835-01-321-7895
NSN 5895-01-374-0027