Silicone Rubber Hole Caps Set With O Ring Sizes 2.5 3 3.5 4mm, Pro Grade Sealing Kit For Pipelines And Industrial Equipment, Heat Resistant -40 To 250 C, Durable, Anti Aging And Alkali Resistant, 10/20/50/100 Pcs

Premium silicone hole cap set with O-ring for 2.5-4 mm
✔️ Heat resistant -40 to 250 C silicone caps in 4 sizes, 10/20/50/100 pcs

This silicone hole cap kit seals small openings in pipelines and industrial equipment. Use it to cap pump housings, instrument cases, coolant/air lines, or other low-pressure systems.

✅ Sizes: 2.5, 3, 3.5, 4 mm with O-ring
✅ Material: Silicone rubber, heat resistant
✅ Temperature range: -40 to 250 C
✅ Pack options: 10/20/50/100 pcs
✅ Color: Transparent

💡 What is a silicone hole cap set with O-ring used for in pipelines and industrial equipment? This handy kit provides reliable sealing solution for small openings in machinery and piping.
- Seals openings in pipelines, pump housings, and instrument panels
- O-ring improves leak resistance in -40 to 250 C environments
- Includes sizes 2.5, 3, 3.5, 4 mm with pack options 10/20/50/100 pcs

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