Available Sizes (14 options)
Popular Sizes
| Part # | Color | Use On | A dim (in.) | B dim (in.) | C dim (in.) | D & E Lengths (in.) | Qty/Bag | Price/Bag | Add to Shopping List |
|---|---|---|---|---|---|---|---|---|---|
| SFPP-0118-GREEN | Green | 6-32 | 0.118 | 0.079 | 0.168 | 1.0 / 1.0 | 1000 | $85.00 | |
| SFPP-0142-PUR | Purple | M4 | 0.142 | 0.094 | 0.204 | 1.0 / 1.0 | 1000 | $90.00 | |
| SFPP-0173-RED | Red | 10-24, 10-32, M5 | 0.173 | 0.098 | 0.250 | 1.0 / 1.0 | 500 | $50.33 | |
| SFPP-0210-WHITE | White | M6 | 0.210 | 0.130 | 0.360 | 1.0 / 1.0 | 500 | $43.80 | |
| SFPP-0218-BLUE | Blue | 1/4-20 | 0.218 | 0.125 | 0.340 | 1.0 / 1.031 | 500 | $47.39 | |
| SFPP-0230-GREY | Grey | 1/4-20 | 0.230 | 0.125 | 0.350 | 1.0 / 1.031 | 500 | $50.86 | |
| SFPP-0285-YEL | Yellow | M8 | 0.285 | 0.160 | 0.400 | 1.0 / 1.062 | 500 | $55.56 | |
| SFPP-0335-OR | Orange | 3/8-16, M9 | 0.335 | 0.160 | 0.460 | 1.0 / 1.031 | 500 | $58.51 | |
| SFPP-0350-PINK | Pink | M10 | 0.350 | 0.187 | 0.473 | 1.0 / 1.062 | 500 | $65.30 | |
| SFPP-0420-GREEN | Green | M11 | 0.420 | 0.235 | 0.540 | 1.0 / 1.062 | 250 | $44.61 | |
| SFPP-0445-PUR | Purple | 1/2-13, M12 | 0.445 | 0.240 | 0.560 | 1.0 / 1.062 | 250 | $49.25 | |
| SFPP-0490-WHITE | White | M14 | 0.490 | 0.255 | 0.610 | 1.0 / 1.0 | 250 | $53.03 | |
| SFPP-0545-RUSTY | Rusty Red | - | 0.545 | 0.275 | 0.663 | 1.0 / 1.0 | 250 | $68.63 | |
| SFPP-0580-RED | Red | M16 | 0.580 | 0.295 | 0.700 | 1.0 / 1.0 | 250 | $77.24 |
Technical Specifications
Properties
Application Tips
Sizing for Spray
Sizing for Immersion
Thread Identification
Lubrication
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.
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
Related Products
Series: SPP
Silicone Pull Plugs
Pull Plugs (SPPs) provide a fast, efficient solution for masking through-holes during painting, anodizing, powder coating and other finishing processes. Their unique pull-through design allows for quick, easy installation—simply pull the narrow handle to securely seat the larger plug in the hole. This saves time, simplifies threaded hole masking, and helps reduce labor costs while delivering reliable protection throughout the finishing process. High Temp Resistance: Withstands up to 600°F (315C°C), ideal for powder coating cure ovens. Versatile fit: Designed to mask both threaded and non-threaded thru-holes. Reusable: High-grade silicone rubber will not harden or melt, allowing for multiple uses. Chemical Resistant: Safe for use in anodizing, e-coating and electroplating baths. To see all pull plugs and other styles that work with common thread sizes, see our Masking Plugs & Threaded Holes Chart.
Series: VTMP
Silicone First Thread Masking Plugs with Handle
Masking plugs for SAE, UNC or metric threads where the first thread must also be masked. Ideal for powder coating, anodizing or other metal finishing. Viadon's Silicone First Thread Masking Plugs have a handle to make insertion and removal quick and easy in threaded blind holes. These plugs are specifically designed for the most common thread sizes, and we carry the most popular ones from 6-32 & M4 through other common sizes like 1/4-20 and M10 even up to M20. The straight wall of the plug section stays firmly in place, sized specifically for internal thread dimension. The top flange neatly masks off the lead thread of a hole, for perfectly masked threaded holes every time. Choose the ideal masking plugs for your needs with Viadon's handy cross-reference chart: Masking Plugs For Threaded Holes Chart.
Series: SFP
Silicone Flangeless Plugs
Especially well suited for threaded holes — can be twisted into blind, threaded holes tightly with the ribs holding the plug more securely. Color-coded for easy identification. Rated to 600°F. Compared to standard tapered plugs, they can be twisted into blind, threaded holes tightly with the ribs holding the plug more securely. This can be extremely useful when a strong seal is required to prevent leaks in anodizing or blow-outs in powder coating or ecoating. The shallow taper and narrow handle allow for complete masking while reducing shadowing during coating. SFP's are easy to insert and remove and are re-usable.
Kits
Various silicone or EPDM rubber plug and cap masking kits contain small quantities of up to 24 unique part numbers. Perfect for job shops or testing new / existing parts to find the correct plugs or caps to know what parts to order. Bonus: Viadon's kits contain up to 50% more part numbers than some competitor kits.