Caps, Plugs & Corks
These are the most popular industrial masking caps, plugs and corks products. Silicone rubber masking with a high temperature rating of 600°F is the industry standard for powder coating, ecoating and anodizing, while EPDM rubber at a 350°F max temp is often the option for painting, blasting and plating. Wood corks are ideal for wet spray painting.
Series: STP
Silicone Tapered Plugs
Save time and money by masking quickly and at low-cost with silicone tapered rubber plugs in powder coating, anodizing, electroplating and ecoating processes…
Series: STP-H
Silicone Tapered Plugs with Handle
The added length from the handle compared to our regular STP plugs allows for fingers large and small to quickly grasp the handle and insert/remove these…
Series: SC
Silicone Straight Wall Caps
Engineered to withstand temperatures up to 600°F (315°C), these caps are highly durable, chemical resistant and 100% reusable. Over 85 standard sizes in stock…
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…
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…
Series: VFC
Silicone Flange Caps
Reusable masking caps designed to protect studs, bolts, and surrounding circular areas during high-heat finishing processes. Ideal for masking studs or bolts…
Series: SFPP
Silicone Flanged Pull Plugs
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…
Series: SCE
Silicone Expandable Caps
Single caps that mask several different thread sizes, eliminating the need for multiple individual sizes while saving storage space. Dual-rib internal design…
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…
Series: HTP
Silicone Hollow Tapered Plugs
Engineered to provide a superior seal while remaining a cost-effective alternative to standard solid plugs. 20-30% cost savings compared to solid versions…
Series: VMFP
Silicone Multi-Flange Plugs
Multi-Flange Plugs (VMFP's) are a great option when the priority is being able to mask as many different holes sizes with a small inventory of plugs. Perfect…
Series: TFP
Silicone Tapered Flange Plugs
Silicone tapered flange plugs are recommended for powder coating, e-coating, anodizing and plating, establishing concentric masked surfaces around holes for…
Series: ETP
EPDM Tapered Plugs
EPDM tapered plugs are a great all-purpose solution to wet spray paint, plating and anodizing masking requirements of blind or through holes where carbon can…
Series: EC
EPDM Straight Wall Caps
EPDM rubber caps are often used for masking parts in anodizing, painting operations, plating tanks and similar thermal applications up to 350°F. Great chemical…
Series: EPP
EPDM Pull Plugs
EPDM pull plugs mask a through-hole in its entirety with a single plug by placing the narrow end through and pulling the large diameter end through. Rated to…
Series: C-REG
Wood Corks
Tapered wood corks designed as a rugged, inexpensive alternative to silicone or EPDM when masking blind holes in high-volume painting operations. Specifically…
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
Need Help Choosing?
Our team has decades of experience helping customers find the right masking solution. Let us help you.