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Products in Mast Seals


Universal Mast Boots
Made of extremely flexible UV resistant vinyl

  • Designed to fit a number of sizes of mast and deck collars of the same basic shape
  • Molded in small steps so top and bottom can be cut at the level that provides a snug fit to the mast and the deck collar
  • Boot may be installed on stepped mast by cutting one side and glue together with the included adhesive
  • Secure the top and bottom with stainless steel hose clamps. A variety of sizes are sold separately below
  • Complete installation instructions are included with each kit

No 91000000 - fits masts with circumferences of 17 1/2" and larger with corresponding mast collars of up to 31"

No 91200000 - fits masts with circumferences of 23" and larger with corresponding mast collars of up to 37"

No 91400000 - fits masts with circumferences of 30" and larger with corresponding mast collars of up to 44"

NOTE: May not fit rectangular masts

Available Stainless Steel Hose Clamps with circumference Ranges:

No 900-88............13.15" - 18.8"
No 900-128............20" - 26.6"
No 900-96.............14.1" - 20.4"
No 900-152............25.5" - 31.4"
No 900-104............15.6" - 22"
No 900-188............32.7" - 38.4"

Two clamps may be joined to reach the desired circumference on larger masts and collars


Don't see it here? Contact us for special orders
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