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 6645-01-327-9935
NSN 5996-01-459-6509
NSN 6320-01-426-8947
NSN 5960-00-494-4764
NSN 5855-01-447-3137
NSN 5925-01-030-7683
NSN 5895-01-574-8929
NSN 5998-01-553-9165
NSN 5925-01-142-7775
NSN 5920-01-432-2428
NSN 6620-00-096-1658
NSN 6130-01-391-7765