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 6685-00-779-8211
NSN 6645-01-350-3138
NSN 6320-01-227-2648
NSN 5905-01-212-2792
NSN 5895-01-578-8426
NSN 6145-00-760-8959
NSN 5975-01-644-5857
NSN 6650-01-411-6292
NSN 6135-00-416-2898
NSN 7035-01-569-4269
NSN 2925-00-845-1480
NSN 6320-00-261-9136