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3M™ 6896 Center Adapter Gasket Replacement
The 3M™ 6896 Center Adapter Gasket is designed to seal the interface between the center adapter and the
lens of the 6000 Series Full Facepiece.
1. Remove nose cup assembly and center adapter assembly as described in previous DIN Port Adapter and
Nose Cup Replacement sections.
2. Remove old 6896 gasket from center adapter and replace with new 6896 gasket.
3. Re-install center adapter and nose cup into facepiece..
3M™ 6893 Inhalation Valve Replacement
Inhalation valves are located on posts at the inside of the facepiece inhalation ports and inside the nose cup
inhalation ports. These valves should be inspected before each respirator use and replaced whenever valves
become damaged or lost.
1. Remove existing valve(s) by lifting from post(s).
2. Install new valve(s) onto post(s). Be certain valve(s) is fully engaged under all three lugs on post(s), lays
flat, and moves freely (spins) on post (Fig. 18).
3M™ 6889 Exhalation Valve Replacement
1. Remove center adapter cover by pulling out from bottom latch.
2. Grasp valve and pull valve stem out from valve seat.
3. Inspect valve seat making certain it is clean and in good condition.
4. Place new 6889 over the exhalation port and push or press valve stem into center hole. Be certain the
valve is fully seated and spins freely in mount (Fig. 16).
5. Replace adapter cover by engaging top and bottom snaps (latches).
Note: Conduct a negative pressure user seal check to ensure exhalation valve is functioning properly.
3M™ 6895 Inhalation Port Gasket Replacement
The 6895 gasket is designed to seal the interface between the bayonet attachment inhalation ports on the
facepiece and filters/cartridges, or dual airline breathing tubes installed on the facepieces. The gaskets should
be inspected with each filter/cartridge change and replaced whenever damaged or seal integrity is questionable.
1. Remove gaskets from facepiece inhalation port bayonet fittings.
2. Install new gaskets onto facepiece inhalation port bayonet fittings. Be certain gaskets are in proper
position under all three bayonet lugs (Fig. 17).
Figure 16 Figure 17 Figure 18