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 6610-00-764-6627
NSN 6145-00-466-4068
NSN 2925-00-136-2612
NSN 5985-01-088-3262
NSN 5910-01-523-2968
NSN 6610-01-147-9072
NSN 5975-01-649-1452
NSN 5920-01-253-8261
NSN 5985-01-413-1257
NSN 6685-01-382-2996
NSN 6240-00-287-1988
NSN 6150-01-604-3801