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 5975-00-644-4972
NSN 4140-00-552-7370
NSN 5905-00-959-3447
NSN 7035-01-646-5433
NSN 4140-01-160-8503
NSN 5930-00-688-7548
NSN 5895-01-479-1694
NSN 5910-01-495-8002
NSN 5950-01-131-9747
NSN 5998-01-656-6381
NSN 5950-01-339-7295
NSN 6645-01-621-4915