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 2925-00-728-4558
NSN 5855-01-356-2759
NSN 5925-00-446-2464
NSN 6650-00-163-9554
NSN 6240-01-157-9128
NSN 6610-00-419-0315
NSN 6105-01-088-0493
NSN 5965-01-625-8421
NSN 5965-01-286-6548
NSN 5930-00-951-9127
NSN 5835-01-205-3089
NSN 5935-00-082-1493