Kirby Morgan 550-081 Regulator Mount Nut Neck Ring Assembly • Brass check valves and

• Brass check valves and relief valve

Kirby Morgan 505-755 Locking Collar Assembly For Stainless Steel Helmets

Chuck Capacity: Up to 2” diameter or 4” core bit

Black 1 510-575 Nose Block Pad 1 510-628 Neck Dam 1 510-754 Head Cushion Assembly 1 510-683 Chin Cushion 1 510-747 Oral Nasal Mask 1 515-033 Communication Set 1 525-309 Reg Rebuild Kit 1 525-311 Side Block Kit 1 525-745 Head Cushion Foam Spacer Kit (HCFS) 1 525-759 Quad-Valve Exhaust Kit 1 530-035 Screw 2 530-045 Screw 1 550-061 Whisker Spacer 2

one-handed opening

Kirby Morgan 550-081 Regulator Mount Nut Neck Ring Assembly • Brass check valves andThe Kirby Morgan 550 081 regulator mount nut is used to secure the demand regulator to the helmet is now made of silicone bronze. The previous material was stainless steel. The silicone bronze regulator mount nuts will be used in assembly and available as spares as soon as our stock of stainless steel regulator mount nuts run out. Any old stock of the stainless steel regulator mount nuts can be used without issue. This decision is based on the shift