--- product_id: 15830599 title: "40 Piece Silicone Rubber Cap Set - Sizes 3/32\" to 3/4\" - End Caps for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable" brand: "high temp masking supply" price: "R$232" currency: BRL in_stock: true reviews_count: 9 category: "High Temp Masking Supply" url: https://www.desertcart.com.br/products/15830599-40-piece-silicone-rubber-cap-set-sizes-3-32-to store_origin: BR region: Brazil --- # Color-coded sizes for quick grab 600°F heat resistance Reusable & ultra-flexible silicone 40 Piece Silicone Rubber Cap Set - Sizes 3/32" to 3/4" - End Caps for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable **Brand:** high temp masking supply **Price:** R$232 **Availability:** ✅ In Stock ## Summary > 🔥 Seal the deal with silicone that works as hard as you do! ## Quick Answers - **What is this?** 40 Piece Silicone Rubber Cap Set - Sizes 3/32" to 3/4" - End Caps for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable by high temp masking supply - **How much does it cost?** R$232 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/15830599-40-piece-silicone-rubber-cap-set-sizes-3-32-to) ## Best For - high temp masking supply enthusiasts ## Why This Product - Trusted high temp masking supply brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Premium silicone resists cracking, shrinking, and hardening—durability that outperforms the rest. - • **Versatile Shield:** Ideal for powder coating, painting, anodizing, plating, and media blasting—your all-in-one masking solution. - • **Heatproof Mastery:** Withstands scorching temps up to 600°F (315°C) for flawless protection during high-heat projects. - • **Pro-Grade Reusability:** Flexible, non-toxic, and reusable caps that keep your workflow sustainable and efficient. - • **Instant Size Recognition:** Vibrant color-coded caps let you grab the perfect fit in seconds—no more fumbling or guesswork. ## Overview This 40-piece silicone rubber cap set offers professional-grade heat resistance up to 600°F, color-coded sizing for quick identification, and unmatched durability. Perfect for powder coating, painting, plating, and more, these flexible, reusable caps provide reliable sealing and protection without cracking or shrinking—making them an essential tool for any serious workshop or industrial application. ## Description This 40 Piece Silicone Cap Kit is a great fit for anyone who needs protective end caps for their project. While most commonly used for masking purposes during powder coating and painting, there are hundreds of other uses around the shop, home, lab, classroom, etc. You will receive 5 of every common size cap (40 total) to fit any size part up to 3/4" (19mm) in diameter. This superior grade of silicone is capable of withstanding temps up to 600 degrees Fahrenheit (315 Celsius) for at least 20 minutes and holds up to most chemicals. It is ultra tough yet flexible, reusable and will not crack, harden, shrink or break over time. Unlike the competitors, all of our premium silicone goods are color coded for ease of use and the color will never bleed or fade. Review: They are ok - They are ok for temporary plugging koses when working on automotive engines Review: THESE WORK GOOD AS ENGINE VACUUM CAPS TOO! - As long as they don't see constant oil they shouldn't swell up and keep sealing mint with temperature! The silicone makes it easier to slip smaller sizes over tighter fits compared to regular parts store vacuum plugs too! Ive been using em for all my vacuum ports for about 2 years now and I've yet to have any failures! ## Features - Withstands heat up to 600 degrees Fahrenheit/315 Celsius. - Flexible, durable and reusable. - Use for powder coating, painting, plating, anodizing, media blasting, etc. - Color coded - easily grab the right size. - Premium quality silicone will not crack, shrink, harden or break. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00XYDFW8K | | Best Sellers Rank | #44,137 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #76 in Protective Caps | | Brand | High Temp Masking Supply | | Brand Name | High Temp Masking Supply | | Color | Clear/Transparent | | Compatible Material | Rubber | | Container Type | Kit | | Customer Reviews | 4.6 out of 5 stars 481 Reviews | | Full Cure Time | 20 Minutes | | Item Form | Kit | | Item Package Quantity | 1 | | Item Weight | 2.4 ounces | | Manufacturer | Powder Pro Coating Supply | | Material | Silicone | | Material Type | Silicone | | Model | HTMS-40PCK | | Number of Pieces | 40 | | Other Special Features of the Product | Heat Resistant, Durable, Crack Resistant, Harden Resistant | | Part Number | HTMS-40PCK | | Special Feature | Heat Resistant, Durable, Crack Resistant, Harden Resistant | | Specific Uses For Product | Anodizing, Media Blasting, Painting, Plating | | UPC | 616639117462 | | Unit Count | 40.0 Count | | Viscosity Level | Medium | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** High Temp Masking Supply - **Material:** Silicone - **Item Form:** Kit - **Color:** Clear/Transparent - **Item Package Quantity:** 1 ## Images ![40 Piece Silicone Rubber Cap Set - Sizes 3/32" to 3/4" - End Caps for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable - Image 1](https://m.media-amazon.com/images/I/81KRqfIXtkL.jpg) ## Questions & Answers **Q: What are the inside diameters of each of the 5 sizes?** A: There are 8 different sizes in this kit - 3/32", 1/8", 3/16", 1/4", 3/8", 1/2", 5/8" & 3/4". **Q: I’m searching for a 3/4” id by 0.5” length. does this kit have this size? i need 4.** A: Yes, this kit has .75” ID caps that are a little over 1” in length. They can be cut down easily. Thanks! **Q: What is the length (not dia.) of each?** A: 1 3/4" **Q: Are they fuel proof i need to cap off ports on a gas tank?** A: I used them to cap fuel lines while performing maintenance and they work great. ## Customer Reviews ### ⭐⭐⭐⭐⭐ They are ok *by O***I on April 3, 2026* They are ok for temporary plugging koses when working on automotive engines ### ⭐⭐⭐⭐⭐ THESE WORK GOOD AS ENGINE VACUUM CAPS TOO! *by M***O on November 17, 2025* As long as they don't see constant oil they shouldn't swell up and keep sealing mint with temperature! The silicone makes it easier to slip smaller sizes over tighter fits compared to regular parts store vacuum plugs too! Ive been using em for all my vacuum ports for about 2 years now and I've yet to have any failures! ### ⭐⭐⭐⭐⭐ Good Selection, I'm Using These to Cap Scissors & Pointy Tools *by C***L on December 17, 2025* Rather than cap hosing, I am using these to cap scissor points and other "pointy" tools after failing to find other solutions. I like the size selection, although I am using the mostly smaller sizes, and have plenty left over for future uses. ## Frequently Bought Together - 40 Piece High Temp Silicone Rubber Protective End Cap Kit - 3/32" to 3/4" for Powder Coating Custom Painting Anodizing - High Temp Masking Supply 235 Piece Silicone Rubber Plug Set - Sizes 1/32" to 1" - Tapered Stoppers for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable - 20pc Extra Large High Temp Silicone Rubber Plug Kit Powder Coating Custom Paint Supplies --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.br/products/15830599-40-piece-silicone-rubber-cap-set-sizes-3-32-to](https://www.desertcart.com.br/products/15830599-40-piece-silicone-rubber-cap-set-sizes-3-32-to) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-06-19*