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 2925-01-136-2551
NSN 5935-01-575-7865
NSN 6130-01-284-4367
NSN 4140-01-031-0286
NSN 5835-00-289-9080
NSN 7035-01-341-6059
NSN 5895-01-202-8748
NSN 5920-01-384-8751
NSN 5950-01-390-0650
NSN 5965-00-594-3115
NSN 5990-00-659-8067
NSN 6135-01-220-7193