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 7035-00-470-4977
NSN 6685-00-874-0752
NSN 5855-01-556-7421
NSN 5920-01-286-8271
NSN 5920-01-105-8879
NSN 5930-01-038-5073
NSN 5915-01-573-8221
NSN 6610-01-531-3595
NSN 5905-01-012-3995
NSN 6135-01-214-6441
NSN 5998-01-059-7399
NSN 5835-01-077-6278