Pan Head Sealing Screws O‑Ring Waterproof Fasteners
Pan head sealing screws are one‑piece self‑sealing machine screws with captive O‑ring fitted into the groove under pan head. When tightened, compressed rubber ring forms 360‑degree barrier to block water, dust, oil and moisture ingress. pan head sealing screws remove extra gaskets or separate sealing washers, simplify assembly steps for enclosures and housings. Manufactured complying with DIN7985 and ISO7045 standards, metric sizes cover M2‑M10 for miniature electronics to medium‑duty outdoor devices.
| Item | Specification |
|---|---|
| Head style | Pan head / Round pan head |
| Drive option | Phillips, Torx, Slotted |
| Screw material | SUS304, SUS316, heat‑treated carbon steel |
| O‑ring material | Silicone, EPDM, NBR, FKM(Viton) |
| Thread range | Metric M2‑M10, partial inch sizes available |
| Sealing grade | Up to IP67 under correct torque |
| Surface finish | Passivation, zinc plating, black oxide |
| Compliance | RoHS, REACH, custom test report available |
pan head sealing screws support flexible material matching according to working media and ambient temperature.
- SUS304 + EPDM O‑ring: General outdoor, rain‑proof, dust‑proof for electrical boxes, cost‑effective mainstream solution.
- SUS316 + FKM O‑ring: Coastal salt‑spray, chemical, high‑temperature working condition, oil‑resistant and anti‑aging.
- Carbon steel + NBR O‑ring: Indoor cabinet, equipment with oil mist environment, cost‑oriented mass projects.
metal material and rubber O‑ring will pass incoming inspection before production. Groove dimension, thread tolerance and O‑ring fitting interference are strictly controlled. Finished batches carry out sampling sealing test, dimension check and torque verification. Standard pan head sealing screws satisfy RoHS requirements for global export. Small‑batch trial order and mass production are acceptable. Pre‑production sample confirmation is required for custom projects.
pan head sealing screws are widely deployed in multiple industrial sectors.
- Outdoor electronic enclosures, monitoring equipment housings, junction boxes.
- New‑energy equipment, battery packs and charging module housings.
- Electrical control cabinets, meter boxes and waterproof instrument shells.
- Automotive auxiliary components, sensor housings.
- Communication equipment and outdoor lighting fixtures.
We are a professional sealing screw and industrial fastener manufacturer. Complete production lines include heading, thread rolling, groove machining, O‑ring assembling and surface treatment. We serve global buyers from new‑energy, electronics, automotive and outdoor equipment industries. Our engineering team offers drawing evaluation, sample development and full‑cycle technical support for custom fastener demands.
If you are sourcing qualified pan head sealing screws for your enclosure projects, please share your drawings, size specs, medium condition and sealing grade requirements. Our technical team will recommend suitable screw and O‑ring combination and provide competitive factory‑direct quotation.
Contact usA: O‑ring material selection, tightening torque, flatness of mounting surface and matching between groove and O‑ring size. Over‑torque will damage rubber ring and cause seal failure.
A: Reuse is allowed only when O‑ring keeps intact without aging, cracking or permanent deformation. Replace O‑ring for critical waterproof devices.
A: Yes, we accept OEM ODM custom for special groove size, O‑ring type, thread specification and surface finish based on drawings or samples.
A: Standard assembly can achieve IP67 under recommended torque. Actual sealing result also depends on workpiece flatness and housing structure.