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 6685-01-634-0611
NSN 5935-00-669-9095
NSN 6685-00-873-2576
NSN 7035-01-523-8664
NSN 5905-01-528-4664
NSN 6220-01-165-7159
NSN 6320-01-422-0765
NSN 6110-01-521-3195
NSN 5935-01-297-6439
NSN 2925-01-274-8576
NSN 5999-00-269-5320
NSN 5855-00-925-7887