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 2925-01-386-7392
NSN 6610-00-211-9095
NSN 5965-01-488-6695
NSN 6150-00-446-7206
NSN 5990-01-561-0737
NSN 2925-00-631-1709
NSN 5915-01-237-3808
NSN 6220-01-329-4696
NSN 6645-00-726-2716
NSN 5960-01-267-6139
NSN 5905-00-960-8451
NSN 5985-01-394-1589