Silicone Flanged Pull Plugs

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600°F
In Stock

Silicone Flanged Pull Plugs

Series: SFPP

Silicone flanged pull plugs for weld nut & first-thread masking (600°F)

Designed to keep the top or first thread clean during industrial finishing — when no powder, paint or anodizing is allowed. Eliminates rework by masking weld nuts and top threads in one step. 40-45 durometer Shore A silicone.

These indispensable masking plugs reduce costs by speeding up the process of masking 82° and 90° countersinks. To use, insert 'tail' into thru-hole, then pull plug into place with flange resting on opposite side for first thread protection. 

Max Temp

600 °F

Material

silicone

Color

white, pink, red, rusty red, orange, yellow, green, blue, purple, grey

Available Sizes (14 options)

Popular Sizes

Technical Specifications

Properties

MaterialSilicone (40-45 durometer Shore A)
Temperature RatingUp to 600°F / 315°C
ReusableYes
Typical ApplicationsMasking weld-nuts / top threads + thru-holes
Resistance CharacteristicsRubber Material Guide

Application Tips

Sizing for Spray
Major diameter should be 2-4% larger than the hole for powder coating and wet spray.
Sizing for Immersion
Use 3-7% larger for applications where the part is immersed in fluid (plating, anodizing, e-coating).
Thread Identification
Identify correct thread size before selection.
Lubrication
If oversized, lubricate with water or alcohol before insertion.

These plugs are manufactured from a softer (40-45 durometer, Shore A) silicone rubber material than many of our other caps and plugs (55-60 durometer, Shore A). This allows the larger flange to pass through a narrower hole when pulled-through / removing from a part after masking. Due to this softer durometer, some plugs may experience a higher rate of tearing and/or shrinking.

Custom Solutions

Need a custom plug or cap?

We provide custom masking for powder coating, anodizing, plating and more.

  • EPDM, silicone, FKM, Neoprene & other materials available
  • Capable of handling small & large quantities
  • Single cavity tooling for prototypes or small quantities
  • Multi-cavity production tooling for large quantities
  • Design Engineer on staff to assist with custom masking needs

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