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 6145-01-138-5592
NSN 5910-01-177-5216
NSN 6645-01-654-9639
NSN 6610-01-200-5887
NSN 5945-01-134-5312
NSN 6645-01-459-7788
NSN 5935-00-167-0646
NSN 6685-01-039-4695
NSN 4140-01-263-6435
NSN 5965-01-240-0233
NSN 5990-01-433-3786
NSN 6220-00-255-1109