Forespar 253 Series Marelon Mushroom Head Thru-Hull Fitting

Features:

• Forespar Marelon® mushroom head thru-hull with hose barb connection
• Suitable for use 6 inches or more above the waterline
  • Less than 6" requires a seacock
• Marelon fittings are popular with many top quality boat builders worldwide
• Marelon® is a proprietary formulation of polymer composite compounds using composite reinforced polymer and additives to produce a superior marine-grade product
  • Designed for use above and below the waterline
  • Complete freedom from corrosion
  • High strength
  • UV Stabilized
  • Will not freeze or become brittle with age or temperature extremes
  • U.L. and A.B.Y.C. approved
  • Marelon fittings can be installed using the same techniques and materials as bronze fittings

Marelon® is a registered trademark of Forespar Products Corp.

Minimum Physical Properties Required for Approval are:

• Tensile Strength 10,900 psi / 75 mPa
• Flexural Modulus 500,000 psi / 3480 mPa

Note: Forespar threaded plumbing fittings, like most true marine plumbing fittings, use NPSM threads (National Standard Free-Fitting Straight Mechanical Pipe Thread). NPT (National Pipe Threads) are tapered, NPSM Threads are parallel. The two types are not designed to work together.

Value by test to ASTM D638 (American Society of Testing & Materials)

Value by test to ASTM D790 (American Society of Testing & Materials)

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