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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
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PHONE HOTLINE: 800-346-4296 E-MAIL: sales@hayn.com
Contact Us
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“T” Terminal Backing Plate Rubber Plugs

 Hayn "T" Terminal Backing Plate Rubber Plugs provide a clean, weatherproof seal over the backing plate opening once a T-terminal installation is complete. 
Strong Where It Matters

"T" Terminal Backing Plate Rubber Plugs

Sized to correspond directly with Hayn T-terminal wire sizes, the rubber plugs fill the exposed backing plate hole to keep moisture, debris, and UV exposure away from the terminal head and structural surface beneath it. Available in five sizes covering wire diameters from 1/8" through 3/8" (3mm through 10mm), they are designed for use with Hayn T-terminal backing plates and complete a finished installation that is both protected and visually clean. 
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rubber plug

“T” Terminal Backing Plate Rubber Plugs

Use the “T” Terminal backing plate rubber plugs with “T” Terminal backing plates. Rubber plug sizes correspond to the terminal wire sizes on the backing plates.

Rubber Plugs
Part # Terminal Wire Size L - Length HT - Head Thickness Weight lbs.
SHRPM03 1/8″ - 3mm 7/32″ 1/4″ 0.001
SHRPM04 5/32″ - 4mm 5/8″ 3/8″ 0.01
SHRPM05 3/16″ - 5mm 1/2″ 1/2″ 0.01
SHRPM07 7/32″ - 1/4″ - 9/32″ - 6mm - 7mm 3/4″ 5/8″ 0.02
SHRPM10 5/16″ - 3/8″ - 8mm - 10mm 3/4″ 5/8″ 0.02
Engineered In America Every Hayn fitting is designed and manufactured at our facility in Rocky Hill, Connecticut — the same American workmanship that has set the standard for stainless steel rigging hardware since 1950.
Cold-Worked Production Hayn fittings are cold-worked, not cast. That distinction matters: the cold-working process refines grain structure, increases fatigue resistance, and produces a fundamentally stronger component — one built to perform when the load comes on it.
Precision Manufacturing Our Rocky Hill production floor runs CNC vertical mills, CNC lathes, large-capacity mill-turn centers, and waterjet cutting systems — all configured to produce hardware that meets exact specifications, every time.
75+ Years of Excellence Hayn has been engineering and manufacturing marine and architectural rigging hardware since 1950. That track record isn't just history, it's the design knowledge, failure data, and continuous improvement that goes into every product we make. 
  • Type 316 stainless steel construction for superior saltwater corrosion resistance
  • Manufactured in Rocky Hill, Connecticut to Hayn's proprietary tolerances
  • Precision-machined using advanced CNC manufacturing equipment



  • Engineered for seamless integration in marine and architectural rigging systems

  • Short lead times on both standard and custom components

  • Backed by 75 years of marine and architectural hardware expertise

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Let's Build Something Together

 Hayn has been engineering precision rigging hardware since 1950. So whatever your project demands, you're building with hardware that's been proven at sea and on structure for generations. 
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