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 5950-01-519-8947
NSN 5935-01-122-4209
NSN 5910-01-093-8456
NSN 4140-01-497-8528
NSN 6105-00-949-3607
NSN 5920-01-182-3268
NSN 6150-00-925-7424
NSN 5895-00-369-7108
NSN 6110-00-104-6396
NSN 5990-01-285-4633
NSN 6145-00-721-4066
NSN 6610-01-382-4974