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 5895-01-240-0569
NSN 5985-00-563-0883
NSN 5930-01-157-6070
NSN 5920-00-502-6044
NSN 7035-01-403-2841
NSN 5835-01-282-3321
NSN 5925-01-570-4863
NSN 7035-00-480-6767
NSN 5999-01-396-8988
NSN 6150-01-275-0548
NSN 6620-01-554-8169
NSN 6135-00-347-0595