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 5975-01-519-2519
NSN 5895-00-660-9930
NSN 5998-00-321-5541
NSN 5960-01-641-3788
NSN 5915-01-054-6015
NSN 6105-01-463-7677
NSN 5965-01-284-0124
NSN 5935-01-202-6219
NSN 6150-01-415-5148
NSN 6130-01-369-0685
NSN 6105-00-141-5598
NSN 6110-01-267-9001