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 5960-00-060-1397
NSN 5990-01-103-3572
NSN 6620-01-278-8028
NSN 5895-00-133-7653
NSN 5996-01-531-4212
NSN 6105-01-153-2302
NSN 6610-01-647-7412
NSN 7035-01-230-0250
NSN 6145-01-308-9583
NSN 5905-00-753-0299
NSN 5925-01-366-7892
NSN 5985-00-528-1902