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Self-Sealing Hardware

APM HEXSEAL Self-Sealing Hardware features fasteners and washers, including SEELSKREWS®, SEELBOLTS®, SEELNUTS®, and SEELOC® WASHERS. This reusable hardware offers positive sealing under pressure or vacuum and resists loosening due to vibration. Optional O-ring seal materials assure performance with a wide variety of gasses and liquids. APM HEXSEAL Self-Sealing Hardware is easy to install, compatible with all surface finishes, and tested and listed to UL Standard 50, Types 1-13.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING SFR8-32X3/4-2701 APM HEXSEAL 1: £0.841 54In Stock	Mfr. Part No. SFR8-32X3/4-2701 Mouser Part No 608-SFR8-32X3/4-2701	APM HEXSEAL	Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING		54In Stock	£0.841 £0.66 £0.603 £0.51 View £0.501 £0.488 £0.475 £0.466 £0.457	Min.: 1 Mult.: 1
Screws & Fasteners 2.5 x 10mm SeelSkrew APM HEXSEAL RM2.5X10MM 2701 RM2.5X10MM 2701 APM HEXSEAL 1: £0.841 256In Stock	Mfr. Part No. RM2.5X10MM 2701 Mouser Part No 608-RM2.5X10MM2701	APM HEXSEAL	Screws & Fasteners 2.5 x 10mm SeelSkrew		256In Stock	£0.841 £0.66 £0.603 £0.533 View £0.496 £0.47 £0.447 £0.432 £0.416	Min.: 1 Mult.: 1
Screws & Fasteners 2.5 x 12mm SeelSkrew APM HEXSEAL RM2.5X12MM 2701 RM2.5X12MM 2701 APM HEXSEAL 1: £1.17 94In Stock	Mfr. Part No. RM2.5X12MM 2701 Mouser Part No 608-RM2.5X12MM2701	APM HEXSEAL	Screws & Fasteners 2.5 x 12mm SeelSkrew		94In Stock	£1.17 £0.917 £0.841 £0.751 View £0.70 £0.666 £0.636 £0.603 £0.582	Min.: 1 Mult.: 1
Screws & Fasteners 1" SS 8-32 PHILIPS SCREW APM HEXSEAL SFR8-32x1-2701 SFR8-32x1-2701 APM HEXSEAL 1: £0.751 25In Stock	Mfr. Part No. SFR8-32x1-2701 Mouser Part No 608-SFR832X12701	APM HEXSEAL	Screws & Fasteners 1" SS 8-32 PHILIPS SCREW		25In Stock	£0.751 £0.601 £0.511 £0.471 View £0.437 £0.415 £0.402 £0.399	Min.: 1 Mult.: 1
Screws & Fasteners SeelSkrew Screw 1/2" Thread Size 4-40 APM HEXSEAL R4-40X1/2 2615 R4-40X1/2 2615 APM HEXSEAL 1: £0.89 27In Stock 150Expected 21/12/2026	Mfr. Part No. R4-40X1/2 2615 Mouser Part No 608-R440X1/22615	APM HEXSEAL	Screws & Fasteners SeelSkrew Screw 1/2" Thread Size 4-40		27In Stock 150Expected 21/12/2026	£0.89 £0.722 £0.613 £0.566 View £0.525 £0.498 £0.474 £0.457 £0.44	Min.: 1 Mult.: 1
Switch Fixings Panel Bushing Seal Bonded Silicone Rub 60225 APM HEXSEAL 1: £1.47 1,714In Stock	Mfr. Part No. 60225 Mouser Part No 608-60225	APM HEXSEAL	Switch Fixings Panel Bushing Seal Bonded Silicone Rub Learn More about APM HEXSEAL self sealing hardware	Datasheet	1,714In Stock	£1.47 £1.33 £1.27 £1.24 £1.14	Min.: 1 Mult.: 1
Screws & Fasteners SCR PAN STL ST 3X12 PHIL SELF SEAL RM3X12MM-2701 APM HEXSEAL 1: £0.421 16,265In Stock	Mfr. Part No. RM3X12MM-2701 Mouser Part No 608-RM3X12MM2701	APM HEXSEAL	Screws & Fasteners SCR PAN STL ST 3X12 PHIL SELF SEAL	Datasheet	16,265In Stock	£0.421 £0.39 £0.333 £0.313 View £0.291 £0.275 £0.261 £0.255	Min.: 1 Mult.: 1
Screws & Fasteners SEELSKREW MT PH REC M3 X 0.5 THD 8MM LG RM3X8MM-2701 APM HEXSEAL 1: £0.421 37,133In Stock	Mfr. Part No. RM3X8MM-2701 Mouser Part No 608-RM3X8MM	APM HEXSEAL	Screws & Fasteners SEELSKREW MT PH REC M3 X 0.5 THD 8MM LG Learn More about APM HEXSEAL self sealing hardware	Datasheet	37,133In Stock	£0.421 £0.39 £0.333 £0.313 View £0.291 £0.275 £0.261	Min.: 1 Mult.: 1
Screws & Fasteners SEELNUTS 10-32 THREAD 10-32 AJ 6 APM HEXSEAL 1: £3.20 5In Stock	Mfr. Part No. 10-32 AJ 6 Mouser Part No 608-10-32AJ6	APM HEXSEAL	Screws & Fasteners SEELNUTS 10-32 THREAD Learn More about APM HEXSEAL self sealing hardware		5In Stock	£3.20 £2.55 £2.34 £2.10 View £2.00 £1.96 £1.90 £1.86 £1.83	Min.: 1 Mult.: 1
Screws & Fasteners SEELNUTS 6-32 THREAD 6-32 AJ 6 APM HEXSEAL 1: £2.52 388In Stock	Mfr. Part No. 6-32 AJ 6 Mouser Part No 608-6-32AJ6	APM HEXSEAL	Screws & Fasteners SEELNUTS 6-32 THREAD Learn More about APM HEXSEAL self sealing hardware		388In Stock	£2.52 £2.37 £2.07 £1.96 View £1.83 £1.75 £1.68 £1.66	Min.: 1 Mult.: 1
Screws & Fasteners 1/4"-20X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R1/4-20X1/2 2701 APM HEXSEAL 1: £0.882 31In Stock	Mfr. Part No. R1/4-20X1/2 2701 Mouser Part No 608-R1/4-20X1/2	APM HEXSEAL	Screws & Fasteners 1/4"-20X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	31In Stock	£0.882 £0.759 £0.712 £0.672 View £0.625 £0.594 £0.567	Min.: 1 Mult.: 1
Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X1 2701 APM HEXSEAL 1: £0.78 49In Stock	Mfr. Part No. R10-32X1 2701 Mouser Part No 608-R10-32X1	APM HEXSEAL	Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	49In Stock	£0.78 £0.668 £0.627 £0.591 View £0.55 £0.522 £0.497	Min.: 1 Mult.: 1
Screws & Fasteners 10-32X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X1/2 2701 APM HEXSEAL 1: £0.586 92In Stock 500Expected 04/11/2026	Mfr. Part No. R10-32X1/2 2701 Mouser Part No 608-R10-32X1/2	APM HEXSEAL	Screws & Fasteners 10-32X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	92In Stock 500Expected 04/11/2026	£0.586 £0.545 £0.468 £0.44 View £0.409 £0.388 £0.371	Min.: 1 Mult.: 1
Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X3/4 2701 APM HEXSEAL 1: £0.834 376In Stock	Mfr. Part No. R10-32X3/4 2701 Mouser Part No 608-R10-32X3/4	APM HEXSEAL	Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	376In Stock	£0.834 £0.712 £0.67 £0.631 View £0.588 £0.558 £0.533 £0.529 £0.519	Min.: 1 Mult.: 1
Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X3/8 2701 APM HEXSEAL 1: £0.533 420In Stock	Mfr. Part No. R10-32X3/8 2701 Mouser Part No 608-R10-32X3/8	APM HEXSEAL	Screws & Fasteners 10-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	420In Stock	£0.533 £0.452 £0.423 £0.399 View £0.369 £0.35 £0.333	Min.: 1 Mult.: 1
Screws & Fasteners 10-32X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R10-32X5/8 2701 APM HEXSEAL 1: £0.638 375In Stock	Mfr. Part No. R10-32X5/8 2701 Mouser Part No 608-R10-32X5/8	APM HEXSEAL	Screws & Fasteners 10-32X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	375In Stock	£0.638 £0.545 £0.512 £0.482 View £0.448 £0.424 £0.404	Min.: 1 Mult.: 1
Screws & Fasteners 2-562X1/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R2-56X1/4 2701 APM HEXSEAL 1: £0.89 601In Stock	Mfr. Part No. R2-56X1/4 2701 Mouser Part No 608-R2-56X1/4	APM HEXSEAL	Screws & Fasteners 2-562X1/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	601In Stock	£0.89 £0.722 £0.613 £0.566 £0.41	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X1 2701 APM HEXSEAL 1: £0.638 480In Stock	Mfr. Part No. R4-40X1 2701 Mouser Part No 608-R4-40X1	APM HEXSEAL	Screws & Fasteners 4-40X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	480In Stock	£0.638 £0.542 £0.508 £0.478 View £0.443 £0.421 £0.333	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X3/8 2701 APM HEXSEAL 1: £0.443 2,952In Stock	Mfr. Part No. R4-40X3/8 2701 Mouser Part No 608-R4-40X3/8	APM HEXSEAL	Screws & Fasteners 4-40X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	2,952In Stock	£0.443 £0.373 £0.348 £0.328 View £0.303 £0.287 £0.273 £0.267	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X5/16 2701 APM HEXSEAL 1: £0.421 87In Stock	Mfr. Part No. R4-40X5/16 2701 Mouser Part No 608-R4-40X5/16	APM HEXSEAL	Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw	Datasheet	87In Stock	£0.421 £0.357 £0.333 £0.313 View £0.291 £0.275 £0.261	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X5/8 2701 APM HEXSEAL 1: £0.458 371In Stock	Mfr. Part No. R4-40X5/8 2701 Mouser Part No 608-R4-40X5/8	APM HEXSEAL	Screws & Fasteners 4-40X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	371In Stock	£0.458 £0.388 £0.363 £0.342 View £0.317 £0.30 £0.285	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X7/16 2701 APM HEXSEAL 1: £0.45 335In Stock 850Expected 04/11/2026	Mfr. Part No. R4-40X7/16 2701 Mouser Part No 608-R4-40X7/16	APM HEXSEAL	Screws & Fasteners 4-40X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	335In Stock 850Expected 04/11/2026	£0.45 £0.378 £0.354 £0.333 View £0.308 £0.292 £0.276	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R4-40X7/8 2701 APM HEXSEAL 1: £0.496 293In Stock	Mfr. Part No. R4-40X7/8 2701 Mouser Part No 608-R4-40X7/8	APM HEXSEAL	Screws & Fasteners 4-40X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	293In Stock	£0.496 £0.421 £0.394 £0.37 View £0.343 £0.325 £0.309	Min.: 1 Mult.: 1
Screws & Fasteners 6-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R6-32X1 2701 APM HEXSEAL 1: £0.661 286In Stock	Mfr. Part No. R6-32X1 2701 Mouser Part No 608-R6-32X1	APM HEXSEAL	Screws & Fasteners 6-32X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	286In Stock	£0.661 £0.56 £0.526 £0.496 View £0.46 £0.437 £0.416 £0.409	Min.: 1 Mult.: 1
Screws & Fasteners 6-32X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw R6-32X1/2 2701 APM HEXSEAL 1: £0.45 1,653In Stock	Mfr. Part No. R6-32X1/2 2701 Mouser Part No 608-R6-32X1/2	APM HEXSEAL	Screws & Fasteners 6-32X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	1,653In Stock	£0.45 £0.425 £0.363 £0.342 View £0.317 £0.30 £0.285	Min.: 1 Mult.: 1

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Self-Sealing Hardware

Types of Electromechanical