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 5999-00-238-6838
NSN 5930-00-167-4520
NSN 6685-00-110-2623
NSN 6110-01-659-7068
NSN 7035-01-227-2546
NSN 6320-01-211-6578
NSN 5950-01-420-7231
NSN 5998-01-539-5153
NSN 6145-01-545-3251
NSN 5895-01-206-5671
NSN 5985-00-299-3510
NSN 5930-00-556-9414