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Self-Sealing Screws
APM Hexseal's self-sealing screws are designed to seal to 20,000 psi
APM Hexseal's self-sealing screws are designed to seal to 20,000 psi, as well as fasten anyplace where gas or liquids are present or under pressure (vacuum). APM's SEELSKREW® stainless steel self-sealing screws feature an embedded O-ring technology (an APM patent) that eliminates the need for liquid sealants. The silicone O-ring resides in an asymmetrical groove located under the head, which permits 360° metal-to-metal contact between the underside of the fastener and equipment exterior surface for positive sealing. Because no adhesive is required (dry), the fastener can easily be removed many times for field servicing and upon initial installation promotes more precise torque. There are no chemical vapors for workers to breathe in, and no waste disposal problems.
High-Pressure SEELSKREWs are used extensively in underwater, surface marine, instrumentation, medical, military-ground, aviation, automotive, robotics, and off-road construction equipment in a wide variety of hydraulic, pneumatic, and electrical control systems.
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SEELSKREW®
| Image | Manufacturer Part Number | Description | Length - Overall | Material | Available Quantity | Price | ||
|---|---|---|---|---|---|---|---|---|
 |  | RM3X6MM 2701 | MACH SCREW PAN HEAD PHILLIPS M3 | 0.342" (8.69mm) | Stainless Steel | 59542 - Immediate | $0.52 | View Details |
|  | RM3X4MM 2701 | MACH SCREW PAN HEAD PHILLIPS M3 | 0.250" (6.35mm) 1/4" | Stainless Steel | 21504 - Immediate | $0.52 | View Details |
|  | RM3X8MM 2701 | MACH SCREW PAN HEAD PHILLIPS M3 | 0.409" (10.40mm) | Stainless Steel | 16010 - Immediate | $0.57 | View Details |
|  | RM3X12MM 2701 | MACH SCREW PAN HEAD PHILLIPS M3 | 0.567" (14.40mm) | Stainless Steel | 9278 - Immediate | $0.57 | View Details |
|  | R4-40X1/4 2701 | MACH SCREW PAN PHILLIPS #4-40 | 0.330" (8.38mm) | Stainless Steel | 6906 - Immediate | $0.57 | View Details |
|  | RM3X10MM 2701 | MACH SCREW PAN HEAD PHILLIPS M3 | 0.488" (12.40mm) | Stainless Steel | 4145 - Immediate | $0.57 | View Details |
|  | RM4X10MM 2701 | MACH SCREW PAN PHILLIPS M4X0.7 | 0.514" (13.06mm) | Stainless Steel | 28797 - Immediate | $0.59 | View Details |
|  | R4-40X3/8 2701 | MACH SCREW PAN PHILLIPS #4-40 | 0.455" (11.56mm) | Stainless Steel | 8377 - Immediate | $0.59 | View Details |
|  | R4-40X1/2 2701 | MACH SCREW PAN PHILLIPS #4-40 | 0.580" (14.73mm) | Stainless Steel | 2943 - Immediate | $0.59 | View Details |
|  | RM2X8MM 2701 | MACH SCREW PAN HEAD PHILLIPS M2 | 0.378" (9.60mm) | Stainless Steel | 4889 - Immediate | $0.67 | View Details |
|  | R10-32X3/8 2701 | MACH SCREW PAN PHILLIPS #10-32 | 0.508" (12.90mm) | Stainless Steel | 8999 - Immediate | $0.68 | View Details |
|  | R8-32X1/2 2701 | MACH SCREW PAN PHILLIPS #8-32 | 0.615" (15.62mm) | Stainless Steel | 13362 - Immediate | $0.70 | View Details |
|  | R4-40X5/16 2701 | MACH SCREW PAN PHILLIPS #4-40 | 0.393" (9.98mm) | Stainless Steel | 4370 - Immediate | $0.57 | View Details |
|  | R4-40X7/16 2701 | MACH SCREW PAN PHILLIPS #4-40 | 0.518" (13.16mm) | Stainless Steel | 2551 - Immediate | $0.57 | View Details |
|  | R6-32X3/8 2701 | MACH SCREW PAN PHILLIPS #6-32 | 0.472" (11.99mm) | Stainless Steel | 12345 - Immediate | $0.59 | View Details |
|  | RM4X6MM 2701 | MACH SCREW PAN PHILLIPS M4X0.7 | 0.356" (9.04mm) | Stainless Steel | 2970 - Immediate | $0.59 | View Details |
|  | RM4X8MM 2701 | MACH SCREW PAN PHILLIPS M4X0.7 | 0.435" (11.05mm) | Stainless Steel | 2697 - Immediate | $0.59 | View Details |
|  | R6-32X5/16 2701 | MACH SCREW PAN PHILLIPS #6-32 | 0.410" (10.41mm) | Stainless Steel | 1538 - Immediate | $0.59 | View Details |
|  | R6-32X1/2 2701 | MACH SCREW PAN PHILLIPS #6-32 | 0.597" (15.16mm) | Stainless Steel | 2770 - Immediate | $0.62 | View Details |
|  | R8-32X1/4 2701 | MACH SCREW PAN PHILLIPS #8-32 | 0.365" (9.27mm) | Stainless Steel | 2695 - Immediate | $0.62 | View Details |
