This assembly also includes one 3M Center Adapter Gasket 6896 and one 3M Exhalation Valve 7583. This product is designed to be used with the 3M Full Facepiece Respirators 6700, 6800 and 6900.
3M 37000, Center Adapter Assembly 6864/37000(AAD), 7000002178, 5 EA/Case
$496.26
Factory Stock, 7-10 Day Leadtime, Priced Per Case
This product features a proprietary design exhalation valve that increases user comfort by making breathing exhalation easier. The unique valve cover design also enhances the protection of the exhalation valve from debris.

3M 47408, 663FC 1" X 30", 70u Diamond Trizact Belts, 7010509031
3M 50216, Temflex Cotton Friction Tape 1755, 3/4 in x 82-1/2 ft, Black, 7010297809
3M 46470, Organic Vapor/Acid Gas Cartridge/Filter 60928, P100, 7000002009, 60 EA/Case
3M 63738, Contractor Grade Multi-Use Duct Tape 2979, Silver, 1.88 in x 60 yd, 7010335692
3M 07024, Half Facepiece Reusable Respirator 6100/07024(AAD) Small, 7000001932, 24 EA/Case
Dynabrade 13061 Arbor Assembly 3/8"-24 Female Thread 
