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Sealing Screw, also known as self sealing screw, is a special integrated sealing fastener combining screw body and elastic sealing washer. Unlike ordinary machine screw, our waterproof Sealing Screw forms a fully closed compression seal after tightening, effectively blocking water, oil, dust and corrosive gas penetrating into equipment interior.
Our factory focuses on industrial grade Sealing Screw manufacturing, all leak proof sealing screws pass strict tightness test, widely applied in automotive battery pack, automation robot joint, new energy equipment, general machinery cabinet and other industrial assembly scenarios. Compared with ordinary screws with separate gaskets, integrated Sealing Screw avoids gasket falling off during installation, greatly improving assembly efficiency and long-term sealing stability.
The elastic sealing ring is firmly fixed on screw head, our Sealing Screw will not shift or drop during high-frequency disassembly, ensuring permanent leak proof performance.
All standard Sealing Screw are made of high-quality carbon steel with zinc plating surface treatment, anti rust, anti oxidation, adapt to humid workshop and outdoor mechanical environment.
Thread of each Sealing Screw is cold extruded with ±0.02mm tolerance, smooth screwing without slipping thread, match perfectly with standard mounting holes of auto and machinery parts.
The sealing washer matched with our Sealing Screw maintains stable elasticity under -40℃ to 120℃, with no hardening or cracking in long-term use.
Direct factory supply of industrial Sealing Screw, support customized size and surface treatment, large order gets favorable wholesale price, reduce overall assembly cost for buyers.
| Item | Technical Data |
|---|---|
| Core Product Name | Sealing Screw / Self Sealing Screw |
| Main Raw Material | Carbon Steel, optional stainless steel |
| Surface Treatment | Blue white zinc, black zinc, nickel plating |
| Sealing Material | EPDM elastic sealing ring |
| Common Thread Size | M3 M4 M5 M6 M8 M10 custom available |
| Sealing Pressure Resistance | ≤1.2MPa liquid tightness |
| Tolerance Standard | ±0.02mm precision industrial grade |
| Certification | IATF16949 automotive industry qualified |
| Custom Service | Length, head type, coating, packaging customization |
Our multi-scenario compatible Sealing Screw solves core leakage pain points for B-end industrial manufacturers, main applicable industries as below:
Cooperation Case: We supply bulk Sealing Screw for multiple new energy equipment manufacturers, each batch passed third-party tightness inspection, zero leakage feedback after 3 years of equipment operation.
Free small quantity Sealing Screw samples available for performance testing.
Adjust size, coating, head type, packaging for special engineering demand.
Large production line, short lead time for mass order of Sealing Screw.
Engineers provide parameter matching suggestion for your equipment model.
Support sea, air, express delivery to worldwide industrial buyers.
Full order tracking, quick response for product quality feedback of Sealing Screw.
If you need wholesale industrial Sealing Screw, customized size solution or sample test support, please fill in the inquiry form below.
Please leave your required Sealing Screw specifications, order quantity, application industry and contact information, our sales manager will send detailed quotation and product catalog within 24 working hours.
An integrated sealing screw features an elastic sealing element pre-molded or permanently fixed beneath the head. Unlike ordinary screws using separate washers that can fall off, become misaligned, or shift during vibration, integrated sealing screws simplify installation, cut assembly time by 20%, and maintain an airtight, liquid-tight seal up to 1.2 MPa.
Our standard sealing screws use high-grade EPDM elastic sealing washers engineered to withstand continuous operating temperatures from -40°C to 120°C without hardening, embrittlement, or loss of elastic memory.
The main screw body is manufactured using high-precision carbon steel or optional stainless steel. Standard protective surface platings include blue-white zinc, black zinc, and nickel plating, ensuring superior resistance to humidity, rust, and industrial atmospheric oxidation.
Yes. While common thread sizes range from M3 to M10, our cold extrusion and heading workshop supports customized lengths, thread pitches, drive types (Torx, Phillips, Hex socket), head styles (pan, countersunk, button), and tailored packaging according to IATF16949 automotive standards.
Each screw is cold-extruded with precision ±0.02mm thread tolerances. Combined with the axial dampening force of the compressed EPDM ring, it creates continuous friction that prevents back-out and loose fixation under prolonged industrial and mechanical vibration.
Yes. We offer free small-quantity samples for fit-up, torque, and pressure tightness testing. Contact our technical sales team with your application requirements to receive your sample package.
