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 6620-01-211-9063
NSN 6645-00-242-0480
NSN 5950-00-172-7747
NSN 6620-00-122-8136
NSN 6220-00-059-7607
NSN 5975-00-081-2171
NSN 6685-00-477-2169
NSN 6110-00-172-4340
NSN 5905-01-605-2401
NSN 5945-01-147-9026
NSN 6135-00-948-7061
NSN 5996-00-811-8120