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 5895-01-346-9018
NSN 6220-01-448-5207
NSN 5960-01-311-2170
NSN 6620-01-561-2798
NSN 6645-00-183-8812
NSN 5996-00-383-6173
NSN 5925-01-217-6009
NSN 5998-01-529-6471
NSN 2925-00-553-8799
NSN 5960-00-546-7533
NSN 5975-01-077-0509
NSN 5985-00-805-5690