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 5950-01-438-4977
NSN 2925-00-824-2186
NSN 6110-01-089-6260
NSN 7035-00-215-3272
NSN 5895-00-915-6403
NSN 5855-00-532-0025
NSN 6240-00-187-4306
NSN 6130-01-010-3603
NSN 5925-01-523-3783
NSN 5965-00-501-7835
NSN 5910-01-580-0637
NSN 5975-00-693-5922