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 5990-01-141-3562
NSN 5925-01-392-7701
NSN 5935-01-606-0645
NSN 5935-00-111-8638
NSN 5855-01-027-1571
NSN 6240-00-985-5244
NSN 6645-01-196-6277
NSN 6620-01-296-0873
NSN 6145-01-634-0388
NSN 6135-00-321-6707
NSN 5920-01-613-5202
NSN 5975-01-272-6182