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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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Results: 153

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Part #

Screws & Fasteners 2-562X3/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R2-56X3/16 2701
APM HEXSEAL
1: £0.89
376In Stock

Mfr. Part No.
R2-56X3/16 2701

Mouser Part No
608-R2-56X3/162701

Screws & Fasteners 2-562X3/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

376In Stock

£0.89

£0.70

£0.639

£0.566

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw

R4-40X5/16 2615
APM HEXSEAL
1: £0.743
6,295In Stock

Mfr. Part No.
R4-40X5/16 2615

Mouser Part No
608-R4-40X5/162615

Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw

Datasheet

6,295In Stock

£0.743

£0.582

£0.533

£0.471

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16

SFR4-40X5/16 2701
APM HEXSEAL
1: £0.661
5,545In Stock

Mfr. Part No.
SFR4-40X5/16 2701

Mouser Part No
608-SFR440X5162701

Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16

5,545In Stock

£0.661

£0.507

£0.462

£0.407

View

Min.: 1
Mult.: 1

Screws & Fasteners 2-562X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R2-56X3/8 2701
APM HEXSEAL
1: £0.89
367In Stock

Mfr. Part No.
R2-56X3/8 2701

Mouser Part No
608-R2-56X3/8

Screws & Fasteners 2-562X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

367In Stock

£0.89

£0.722

£0.613

£0.566

View

Min.: 1
Mult.: 1

Screws & Fasteners

SFR832X3/8 2701
APM HEXSEAL
1: £0.676
100In Stock

Mfr. Part No.
SFR832X3/8 2701

Mouser Part No
608-SFR832X3/8

Screws & Fasteners

100In Stock

£0.676

£0.526

£0.442

£0.431

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 20MM

SM3X20MM-2701
APM HEXSEAL
1: £0.773
553In Stock

Mfr. Part No.
SM3X20MM-2701

Mouser Part No
608-SM3X20MM-2701

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 20MM

553In Stock

£0.773

£0.603

£0.469

£0.459

View

Min.: 1
Mult.: 1

Screws & Fasteners 2-562X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R2-56X5/16 2701
APM HEXSEAL
1: £0.89
60Expected 28/07/2026

Mfr. Part No.
R2-56X5/16 2701

Mouser Part No
608-R2-56X5/16

Screws & Fasteners 2-562X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

60Expected 28/07/2026

£0.89

£0.70

£0.639

£0.566

View

Min.: 1
Mult.: 1

Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM

SM3X6MM-2701
APM HEXSEAL
1: £0.571
2,988In Stock

Mfr. Part No.
SM3X6MM-2701

Mouser Part No
608-SM3X6MM-2701

Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM

2,988In Stock

£0.571

£0.445

£0.406

£0.358

View

Min.: 1
Mult.: 1

Screws & Fasteners

S/6-32X1/4 2701
APM HEXSEAL
1: £0.555
220In Stock

Mfr. Part No.
S/6-32X1/4 2701

Mouser Part No
608-S/6-32X1/4

Screws & Fasteners

220In Stock

£0.555

£0.396

£0.361

£0.317

View

Min.: 1
Mult.: 1

Screws & Fasteners

SFR4-40 x 3/8 2701
APM HEXSEAL
1: £0.548
2,512In Stock
4,350Expected 04/08/2026

Mfr. Part No.
SFR4-40 x 3/8 2701

Mouser Part No
608-SFR4-40X3-82701

Screws & Fasteners

2,512In Stock

4,350Expected 04/08/2026

£0.548

£0.425

£0.409

£0.318

£0.303

Min.: 1
Mult.: 1

Screws & Fasteners Screws and Fasteners

SFR8-32x1/2-2701
APM HEXSEAL
1: £0.751
308In Stock

Mfr. Part No.
SFR8-32x1/2-2701

Mouser Part No
608-SFR832X1/22701

Screws & Fasteners Screws and Fasteners

308In Stock

£0.751

£0.601

£0.511

£0.471

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 12MM

SM3X12MM-2701
APM HEXSEAL
1: £0.601
1,132In Stock

Mfr. Part No.
SM3X12MM-2701

Mouser Part No
608-SM3X12MM-2701

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 12MM

1,132In Stock

£0.601

£0.465

£0.425

£0.374

View

Min.: 1
Mult.: 1

Screws & Fasteners M2.5X6MM, Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

RM2.5x6MM 2701
APM HEXSEAL
1: £0.751
800In Stock
2,850Expected 17/08/2026

Mfr. Part No.
RM2.5x6MM 2701

Mouser Part No
608-RM2.5X6MM2701

Screws & Fasteners M2.5X6MM, Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

800In Stock

2,850Expected 17/08/2026

£0.751

£0.583

£0.455

£0.437

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW STD PH REC 1/4-20 THD 1" LG

R1/4-20X1
APM HEXSEAL
1: £1.73
25In Stock

Mfr. Part No.
R1/4-20X1

Mouser Part No
608-R1/4-20X1

Screws & Fasteners SEELSKREW STD PH REC 1/4-20 THD 1" LG

25In Stock

£1.73

£1.37

£1.15

£1.08

View

Min.: 1
Mult.: 1

Screws & Fasteners 10-32X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-32X7/8 2701
APM HEXSEAL
1: £1.12
25In Stock

Mfr. Part No.
R10-32X7/8 2701

Mouser Part No
608-R10-32X7/8

Screws & Fasteners 10-32X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

25In Stock

£1.12

£0.899

£0.759

£0.705

£0.495

Min.: 1
Mult.: 1

Screws & Fasteners SCR PAN STL sT m3X25 PHIL SELF SEAL

RM3X25MM 2701
APM HEXSEAL
1: £1.42
10In Stock
250Expected 03/08/2026

Mfr. Part No.
RM3X25MM 2701

Mouser Part No
608-RM3X25MM2701

Screws & Fasteners SCR PAN STL sT m3X25 PHIL SELF SEAL

10In Stock

250Expected 03/08/2026

£1.42

£1.15

£0.969

£0.899

£0.661

Min.: 1
Mult.: 1

Screws & Fasteners

SFR4-40 x 3/8 2615
APM HEXSEAL
1: £0.811
189In Stock
200Expected 04/08/2026

Mfr. Part No.
SFR4-40 x 3/8 2615

Mouser Part No
608-SFR4-40X382615

Screws & Fasteners

189In Stock

200Expected 04/08/2026

£0.811

£0.636

£0.581

£0.513

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 8MM

SM3X8MM-2701
APM HEXSEAL
1: £0.571
209In Stock

Mfr. Part No.
SM3X8MM-2701

Mouser Part No
608-SM3X8MM-2701

Screws & Fasteners SEELSKREW MT PH SLOT M3 X .5 THD 8MM

209In Stock

£0.571

£0.445

£0.406

£0.358

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R4-40X9/16 2701
APM HEXSEAL
1: £0.736
3,360In Stock

Mfr. Part No.
R4-40X9/16 2701

Mouser Part No
608-R4-40X9/16

Screws & Fasteners 4-40X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

3,360In Stock

£0.736

£0.567

£0.438

£0.434

View

Min.: 1
Mult.: 1

Screws & Fasteners 1/4-20X1" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw

ST1/4-20X1 2701
APM HEXSEAL
1: £2.45
27In Stock

Mfr. Part No.
ST1/4-20X1 2701

Mouser Part No
608-ST1/4-20X1

Screws & Fasteners 1/4-20X1" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw

Datasheet

27In Stock

£2.45

£1.96

£1.80

£1.53

View

Min.: 1
Mult.: 1

Screws & Fasteners 10-24X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-24X7/8 2701
APM HEXSEAL
1: £1.12
27In Stock

Mfr. Part No.
R10-24X7/8 2701

Mouser Part No
608-R10-24X7/8

Screws & Fasteners 10-24X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

27In Stock

£1.12

£0.899

£0.759

£0.705

£0.495

Min.: 1
Mult.: 1

Screws & Fasteners 2-562X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R2-56X1 2701
APM HEXSEAL
1: £0.89
16In Stock

Mfr. Part No.
R2-56X1 2701

Mouser Part No
608-R2-56X1

Screws & Fasteners 2-562X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

16In Stock

£0.89

£0.70

£0.537

£0.53

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING

SFR8-32X3/4-2701
APM HEXSEAL
1: £0.841
94In Stock

Mfr. Part No.
SFR8-32X3/4-2701

Mouser Part No
608-SFR8-32X3/4-2701

Screws & Fasteners SEELSKREW FLATHEAD W/SILICON RBR O-RING

94In Stock

£0.841

£0.66

£0.603

£0.51

View

Min.: 1
Mult.: 1

Screws & Fasteners 10-24X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-24X5/8 2701
APM HEXSEAL
1: £0.969
40In Stock

Mfr. Part No.
R10-24X5/8 2701

Mouser Part No
608-R10-24X5/8

Screws & Fasteners 10-24X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

40In Stock

£0.969

£0.78

£0.663

£0.614

£0.422

Min.: 1
Mult.: 1

Screws & Fasteners 10-24X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-24X9/16 2701
APM HEXSEAL
1: £0.882
12In Stock

Mfr. Part No.
R10-24X9/16 2701

Mouser Part No
608-R10-24X9/16

Screws & Fasteners 10-24X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

12In Stock

£0.882

£0.716

£0.608

£0.56

View

Min.: 1
Mult.: 1