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| Application | What’s at Risk | Our Solution |
|---|---|---|
| Outdoor Electrical Enclosures | Rain, condensation, dust ingress | IP67/IP68 rated O-ring seal |
| Junction Boxes & Meters | Moisture causing short circuits | EPDM washer – weatherproof |
| Marine / Boat Equipment | Salt water corrosion | 316 stainless steel + silicone O-ring |
| Metal Roofing | Leaks through fastener holes | Self-sealing screw with bonded washer |
| Automotive Lighting | Fogging inside lamp housings | Compression seal – stays tight |
| Industrial Control Panels | Dust and humidity | Pre-installed rubber gasket |
| Sealing Type | How It Works | Best For |
|---|---|---|
| O-ring Seal | Rubber ring compressed between head and surface | General purpose, water and dust ingress prevention |
| EPDM Bonded Washer | Washer bonded to the head – cannot detach or shift | Outdoor applications, metal roofing, UV exposure |
| Silicone Seal | Stays flexible under severe temperature ranges (-50°C to +200°C) | Extreme temperature conditions |
| FKM / Viton Seal | High-performance resistance against chemicals, oils, and fuels | Harsh industrial and chemical environments |
| Nitrile (NBR) Seal | Resilient material with high oil and fuel resistance | Automotive systems, industrial machinery |
| Material | Best For |
|---|---|
| 304 Stainless Steel | Outdoor environments, damp conditions, standard corrosion resistance |
| 316 Stainless Steel | Marine environments, saltwater exposure, aggressive chemicals |
| Zinc Plated Carbon Steel | Indoor uses, mild outdoor exposure, economical applications |
ISO 9001 and ISO 10012 certified. Every production batch is fully inspected. O-rings are thoroughly tested for secure retention and reliable sealing performance.
Need a specialized head style, distinct sealing compound, or non-standard thread length? Send us your technical drawing. We manufacture fasteners precisely to your specifications. OEM and ODM orders are welcome.
Established in 1998, YH Fastener produces high-precision sealing screws, self-tapping screws, machine screws, shoulder screws, and custom engineered fasteners. Direct from the factory, exporting to 60+ countries worldwide.
| Attribute | Details |
|---|---|
| Screw Type | Sealing Screws |
| Head Styles | Phillips Pan Head / Hex Washer Head / Hex Socket Head |
| Sealing Materials | NBR / Silicone / EPDM / FKM (Viton) |
| Body Materials | 304 Stainless Steel, 316 Stainless Steel, Zinc Plated Carbon Steel |
| Sizes & Lengths | M4, M5, M6 (Lengths: 6 mm to 30 mm, custom lengths supported) |
| Ingress Protection | IP67 / IP68 Ingress Protection Rated |
| Typical Applications | Outdoor Enclosures, Junction Boxes, Marine Hardware, Metal Roofing, Automotive Lighting |
Pre-assembled sealing screws feature an integrated O-ring or bonded washer directly beneath the head. This eliminates the need for manual liquid sealants or separate loose washers, ensuring quick installation and a uniform 360-degree leak-proof barrier.
Silicone seals are best suited for extreme temperature variations, functioning reliably between -50°C and +200°C. For chemical and extreme heat resistance combined, FKM (Viton) is also an optimal solution.
Our sealing screws are engineered to achieve IP67 and IP68 waterproof and dustproof ratings, effectively sealing against high-pressure moisture, total submersion, and fine particulate ingress.
While 304 stainless steel provides excellent general corrosion resistance for outdoor damp environments, 316 stainless steel contains molybdenum, providing superior protection against saltwater, marine environments, and corrosive chemicals.
Yes, we provide full OEM and custom manufacturing services. You can submit your technical drawing or physical sample to obtain fasteners made to your exact dimensions, head styles, and seal specifications.
Every batch undergoes rigorous quality control under ISO 9001 and ISO 10012 standards. O-rings and bonded washers are mechanically tested for secure head retention and compression performance to prevent dislodging during shipment or installation.
