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 5935-00-001-8836
NSN 5975-01-608-2557
NSN 5925-01-168-7812
NSN 6685-01-384-4138
NSN 4140-01-555-0876
NSN 6620-00-299-2530
NSN 5999-01-089-4562
NSN 6645-01-277-9337
NSN 5925-01-180-0082
NSN 5835-01-452-7081
NSN 5965-01-633-3573
NSN 2925-01-527-7216