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 6240-00-239-8295
NSN 5998-01-536-9847
NSN 5999-00-161-7849
NSN 5920-01-508-7820
NSN 6240-00-926-7788
NSN 6685-01-083-4348
NSN 5920-01-383-7003
NSN 6610-01-500-9107
NSN 5920-01-342-7638
NSN 7035-01-555-7761
NSN 5975-00-149-0676
NSN 5855-01-485-7755