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 4140-01-483-0477
NSN 5895-01-565-4081
NSN 5925-01-476-7536
NSN 6240-00-342-9756
NSN 7035-01-403-2841
NSN 4140-01-476-1096
NSN 5935-01-279-3415
NSN 6320-01-329-8380
NSN 5915-00-624-0168
NSN 5835-01-110-0697
NSN 6685-00-961-9347
NSN 6135-01-067-8331