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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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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: $1.21
302In Stock
300Expected 8/6/2026

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

302In Stock

300Expected 8/6/2026

$1.21

$1.02

$0.698

$0.688

$0.687

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: $0.945
3,560In 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

3,560In Stock

$0.945

$0.808

$0.631

$0.63

View

Min.: 1
Mult.: 1

Screws & Fasteners

S/6-32X1/4 2701
APM HEXSEAL
1: $0.765
34In Stock

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

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

Screws & Fasteners

34In Stock

$0.765

$0.545

$0.436

$0.392

View

Min.: 1
Mult.: 1

Screws & Fasteners

SFR4-40 x 3/8 2701
APM HEXSEAL
1: $0.848
2,270In Stock

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

Mouser Part No
608-SFR4-40X3-82701

Screws & Fasteners

2,270In Stock

$0.848

$0.756

$0.723

$0.651

View

Min.: 1
Mult.: 1

Screws & Fasteners Screws and Fasteners

SFR8-32x1/2-2701
APM HEXSEAL
1: $1.00
308In Stock

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

Mouser Part No
608-SFR832X1/22701

Screws & Fasteners Screws and Fasteners

308In Stock

$1.00

$0.765

$0.649

$0.582

View

Min.: 1
Mult.: 1

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

SM3X12MM-2701
APM HEXSEAL
1: $0.931
77In Stock
650Expected 22/6/2026

Mfr. Part No.
SM3X12MM-2701

Mouser Part No
608-SM3X12MM-2701

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

77In Stock

650Expected 22/6/2026

$0.931

$0.794

$0.676

$0.575

Quote

Min.: 1
Mult.: 1

Screws & Fasteners

SFR4-40 x 3/8 2615
APM HEXSEAL
1: $1.08
349In Stock

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

Mouser Part No
608-SFR4-40X382615

Screws & Fasteners

349In Stock

$1.08

$0.816

$0.726

$0.635

View

Min.: 1
Mult.: 1

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

SM3X8MM-2701
APM HEXSEAL
1: $1.03
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

$1.03

$0.762

$0.649

$0.516

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: $1.21
487In 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

487In Stock

$1.21

$0.917

$0.778

$0.699

View

Min.: 1
Mult.: 1

Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM

SM3X6MM-2701
APM HEXSEAL
1: $0.876
1,195In Stock

Mfr. Part No.
SM3X6MM-2701

Mouser Part No
608-SM3X6MM-2701

Screws & Fasteners METRIC PAN HEAD WITH SLOTTED DRIVE 6MM

1,195In Stock

$0.876

$0.649

$0.513

$0.481

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: $1.00
1,002In Stock

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

1,002In Stock

$1.00

$0.86

$0.856

$0.855

View

Min.: 1
Mult.: 1

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

SFR4-40X5/16 2701
APM HEXSEAL
1: $0.834
2,108In Stock
3,650Expected 6/7/2026

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

Mouser Part No
608-SFR440X5162701

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

2,108In Stock

3,650Expected 6/7/2026

$0.834

$0.637

$0.617

$0.557

View

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: $1.06
2,497In Stock

Mfr. Part No.
R10-32X1/2 2701

Mouser Part No
608-R10-32X1/2

Screws & Fasteners 10-32X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

2,497In Stock

$1.06

$0.99

$0.849

$0.801

View

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: $1.20
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

$1.20

$0.909

$0.771

$0.692

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: $1.54
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

$1.54

$1.17

$0.995

$0.892

View

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: $1.21
26In 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

26In Stock

$1.21

$0.917

$0.874

$0.803

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: $3.14
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

$3.14

$2.67

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: $1.33
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

$1.33

$1.02

$0.865

$0.777

View

Min.: 1
Mult.: 1

Screws & Fasteners 2.5 x 10mm SeelSkrew

RM2.5X10MM 2701
APM HEXSEAL
1: $1.13
297In Stock

Mfr. Part No.
RM2.5X10MM 2701

Mouser Part No
608-RM2.5X10MM2701

Screws & Fasteners 2.5 x 10mm SeelSkrew

297In Stock

$1.13

$0.849

$0.755

$0.66

View

Min.: 1
Mult.: 1

Screws & Fasteners Screw

SFR4-40X1/2-7601
APM HEXSEAL
1: $0.487
278In Stock

Mfr. Part No.
SFR4-40X1/2-7601

Mouser Part No
608-SFR4-40X1/2-7601

Screws & Fasteners Screw

278In Stock

$0.487

$0.485

$0.48

$0.449

$0.442

Min.: 1
Mult.: 1

Screws & Fasteners 2.5 x 12mm SeelSkrew

RM2.5X12MM 2701
APM HEXSEAL
1: $1.65
25In Stock

Mfr. Part No.
RM2.5X12MM 2701

Mouser Part No
608-RM2.5X12MM2701

Screws & Fasteners 2.5 x 12mm SeelSkrew

25In Stock

$1.65

$1.25

$1.11

$0.97

View

Min.: 1
Mult.: 1

Screws & Fasteners 8-32X1/4", Slotted Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

S8-32X1/4 2701
APM HEXSEAL
1: $0.82
471In Stock

Mfr. Part No.
S8-32X1/4 2701

Mouser Part No
608-S8-32X1/42701

Screws & Fasteners 8-32X1/4", Slotted Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

471In Stock

$0.82

$0.595

$0.466

$0.438

View

Min.: 1
Mult.: 1

Screws & Fasteners 1" SS 8-32 PHILIPS SCREW

SFR8-32x1-2701
APM HEXSEAL
1: $1.00
25In Stock

Mfr. Part No.
SFR8-32x1-2701

Mouser Part No
608-SFR832X12701

Screws & Fasteners 1" SS 8-32 PHILIPS SCREW

25In Stock

$1.00

$0.767

$0.766

$0.67

View

Min.: 1
Mult.: 1

Screws & Fasteners SeelSkrew Screw 1/2" Thread Size 4-40

R4-40X1/2 2615
APM HEXSEAL
1: $1.21
250In Stock

Mfr. Part No.
R4-40X1/2 2615

Mouser Part No
608-R440X1/22615

Screws & Fasteners SeelSkrew Screw 1/2" Thread Size 4-40

250In Stock

$1.21

$0.917

$0.778

$0.699

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW MT PH REC M3 X 0.5 THD 8MM LG

RM3X8MM-2701
APM HEXSEAL
1: $0.737
10,126In Stock
23,700Expected 28/5/2026

Mfr. Part No.
RM3X8MM-2701

Mouser Part No
608-RM3X8MM

Screws & Fasteners SEELSKREW MT PH REC M3 X 0.5 THD 8MM LG

Datasheet

10,126In Stock

23,700Expected 28/5/2026

$0.737

$0.598

$0.52

$0.492

View

Min.: 1
Mult.: 1