Our bolt-on compression collars (commonly referred to as couplings) from Lorenz provide a reliable and economical method of connecting pneumatic conveying tubing and hose. Standard Features:
-Easy to install
-Stainless steel or galvanized shells available
-Standard black neoprene gasket – 1/8” OD thick
-White, viton and silicone seals also available
-Thick reinforcement bars provide extra strength
-Stainless steel anti-static strips included
-Threaded bolts will not strip or break
-Replacement seals available
-Joint protectors available upon request
-Lengths: 2 bolts = 4” – 3 bolts = 6” – 4 bolts = 8” – 5 bolts = 10” – 6 bolts = 12” (calculate 2” per bolt)

Type of seals:
-Neoprene: Our black neoprene gasket for Lorenz Bolt Collars is perfect for most bulk applications. Resists rotting and cracking that can be caused by exposure to ozone. Temperature difference: (-40° to +200 F°) (-40° to +100°C).
– White Nitrile: Made from high quality FDA approved ingredients
-Silicone: For use in high temperature applications. Silicone is odorless, tasteless, non-toxic and non-corrosive. Available for all Lorenz products (-60° to +450° F) (-50° to +230° C)
-Viton: Please consult us for specific details of this product.