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 5925-01-387-3280
NSN 5999-01-187-5821
NSN 6110-00-845-0524
NSN 5920-00-296-0454
NSN 6145-00-409-6844
NSN 5930-01-585-6226
NSN 5855-01-029-8733
NSN 5985-01-123-3002
NSN 6220-01-027-1294
NSN 6320-01-496-4605
NSN 6320-01-255-2096
NSN 5975-01-156-7838