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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 8-32X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R8-32X3/8 2701
APM HEXSEAL
1: $0.806
674In Stock

Mfr. Part No.
R8-32X3/8 2701

Mouser Part No
608-R8-32X3/8

Screws & Fasteners 8-32X3/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

674In Stock

$0.806

$0.773

$0.662

$0.623

View

Min.: 1
Mult.: 1

Screws & Fasteners 8-32X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R8-32X5/16 2701
APM HEXSEAL
1: $0.806
206In Stock

Mfr. Part No.
R8-32X5/16 2701

Mouser Part No
608-R8-32X5/162701

Screws & Fasteners 8-32X5/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

206In Stock

$0.806

$0.742

$0.635

$0.595

View

Min.: 1
Mult.: 1

Screws & Fasteners 8-32X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R8-32X5/8 2701
APM HEXSEAL
1: $0.89
90In Stock

Mfr. Part No.
R8-32X5/8 2701

Mouser Part No
608-R8-32X5/8

Screws & Fasteners 8-32X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

90In Stock

$0.89

$0.753

$0.705

$0.66

View

Min.: 1
Mult.: 1

Screws & Fasteners 8-32X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R8-32X7/16 2701
APM HEXSEAL
1: $1.00
81In Stock

Mfr. Part No.
R8-32X7/16 2701

Mouser Part No
608-R8-32X7/16

Screws & Fasteners 8-32X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

81In Stock

$1.00

$0.759

$0.726

$0.626

View

Min.: 1
Mult.: 1

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

R8-32X7/8 2701
APM HEXSEAL
1: $1.01
758In Stock

Mfr. Part No.
R8-32X7/8 2701

Mouser Part No
608-R8-32X7/8

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

Datasheet

758In Stock

$1.01

$0.931

$0.77

$0.737

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW MT PH REC M4 X 0.7 THD 20MM LG

RM4X20MM-2701
APM HEXSEAL
1: $0.862
1,567In Stock

Mfr. Part No.
RM4X20MM-2701

Mouser Part No
608-RM4X20MM2701

Screws & Fasteners SEELSKREW MT PH REC M4 X 0.7 THD 20MM LG

Datasheet

1,567In Stock

$0.862

$0.688

$0.599

$0.569

$0.539

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW FH REC 4-40 THD 1/4" NBR

SFR4-40 X 1/4 2701
APM HEXSEAL
1: $0.82
3,828In Stock

Mfr. Part No.
SFR4-40 X 1/4 2701

Mouser Part No
608-SFR4-40X1/42701

Screws & Fasteners SEELSKREW FH REC 4-40 THD 1/4" NBR

3,828In Stock

$0.82

$0.574

$0.459

$0.413

View

Min.: 1
Mult.: 1

Screws & Fasteners

SFR6-32 x 3/8 2701
APM HEXSEAL
1: $1.00
567In Stock

Mfr. Part No.
SFR6-32 x 3/8 2701

Mouser Part No
608-SFR6-323/82701

Screws & Fasteners

567In Stock

$1.00

$0.851

$0.566

$0.542

$0.53

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 5/16-24 THREAD

5/16-24 AJ 6
APM HEXSEAL
1: $5.10
25In Stock

Mfr. Part No.
5/16-24 AJ 6

Mouser Part No
608-5/16-24AJ6

Screws & Fasteners SEELNUTS 5/16-24 THREAD

25In Stock

$5.10

$4.35

$4.09

$3.74

View

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: $1.56
7In Stock

Mfr. Part No.
R1/4-20X1/2 2701

Mouser Part No
608-R1/4-20X1/2

Screws & Fasteners 1/4"-20X1/2", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

7In Stock

$1.56

$1.32

$1.24

$1.16

View

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: $1.36
56In Stock

Mfr. Part No.
R10-32X1 2701

Mouser Part No
608-R10-32X1

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

Datasheet

56In Stock

$1.36

$1.17

$1.10

$1.03

View

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: $0.778
648In Stock

Mfr. Part No.
R2-56X1/4 2701

Mouser Part No
608-R2-56X1/4

Screws & Fasteners 2-562X1/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

648In Stock

$0.778

$0.766

$0.649

$0.645

Min.: 1
Mult.: 1

Screws & Fasteners 6-32X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R6-32X3/4 2701
APM HEXSEAL
1: $0.862
862In Stock

Mfr. Part No.
R6-32X3/4 2701

Mouser Part No
608-R6-32X3/4

Screws & Fasteners 6-32X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

862In Stock

$0.862

$0.726

$0.678

$0.638

View

Min.: 1
Mult.: 1

Screws & Fasteners 8-32X5/8", Phillips Flat Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

SFR8-32X5/8 2701
APM HEXSEAL
1: $1.06
39In Stock

Mfr. Part No.
SFR8-32X5/8 2701

Mouser Part No
608-SFR8-32X5/82701

Screws & Fasteners 8-32X5/8", Phillips Flat Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

39In Stock

$1.06

$0.867

$0.795

$0.737

$0.595

Min.: 1
Mult.: 1

Screws & Fasteners Screw

SFR4-40X1/2-7601
APM HEXSEAL
1: $0.487
53In Stock

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

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

Screws & Fasteners Screw

53In Stock

$0.487

$0.485

$0.48

$0.449

$0.442

Min.: 1
Mult.: 1

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

R2-56X1/2 2701
APM HEXSEAL
1: $1.47
8In Stock

Mfr. Part No.
R2-56X1/2 2701

Mouser Part No
608-R2-56X1/2

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

Datasheet

8In Stock

$1.47

$1.26

$1.07

$1.05

$0.954

Min.: 1
Mult.: 1

Screws & Fasteners 4-40X1/2", Slotted Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

S4-40X1/2 2701
APM HEXSEAL
1: $0.50
282In Stock

Mfr. Part No.
S4-40X1/2 2701

Mouser Part No
608-S4-40X1/22701

Screws & Fasteners 4-40X1/2", Slotted Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

282In Stock

$0.50

$0.475

$0.418

$0.407

View

Min.: 1
Mult.: 1

Screws & Fasteners 10-24X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-24X7/16 2701
APM HEXSEAL
1: $1.17
87In Stock

Mfr. Part No.
R10-24X7/16 2701

Mouser Part No
608-R10-24X7/16

Screws & Fasteners 10-24X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

87In Stock

$1.17

$0.892

$0.756

$0.68

View

Min.: 1
Mult.: 1

Screws & Fasteners 2-562X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R2-56X3/4 2701
APM HEXSEAL
1: $2.06
615In Stock

Mfr. Part No.
R2-56X3/4 2701

Mouser Part No
608-R2-56X3/4

Screws & Fasteners 2-562X3/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

615In Stock

$2.06

$1.75

$1.57

$0.776

$0.759

Min.: 1
Mult.: 1

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

SFR8-32X3/4-2701
APM HEXSEAL
1: $1.13
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

$1.13

$0.849

$0.755

$0.66

View

Min.: 1
Mult.: 1

Screws & Fasteners Standard FlatHead w/ Cross Recess Drive

SFR4-40X1/2 2701 BLKOX
APM HEXSEAL
1: $0.765
200In Stock
Factory Special Order

Mfr. Part No.
SFR4-40X1/2 2701 BLKOX

Mouser Part No
608-SFR4-40X1/2-2701

Factory Special Order

Screws & Fasteners Standard FlatHead w/ Cross Recess Drive

200In Stock

$0.765

$0.667

$0.567

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: $0.987
55On Order

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

55On Order

$0.987

$0.749

$0.666

$0.582

View

Min.: 1
Mult.: 1

Screws & Fasteners 6-32X1/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R6-32X1/4 2701
APM HEXSEAL
1: $0.862
949Expected 19/2/2026

Mfr. Part No.
R6-32X1/4 2701

Mouser Part No
608-R6-32X1/4

Screws & Fasteners 6-32X1/4", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

949Expected 19/2/2026

$0.862

$0.676

$0.585

$0.555

View

Min.: 1
Mult.: 1

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

R8-32X1/4 2701
APM HEXSEAL
1: $0.931
514Expected 17/2/2026

Mfr. Part No.
R8-32X1/4 2701

Mouser Part No
608-R8-32X1/4

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

Datasheet

514Expected 17/2/2026

$0.931

$0.699

$0.621

$0.543

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 10-32 THREAD

10-32 AJ 6
APM HEXSEAL
1: $4.56
75In Stock

Mfr. Part No.
10-32 AJ 6

Mouser Part No
608-10-32AJ6

Screws & Fasteners SEELNUTS 10-32 THREAD

75In Stock

$4.56

$3.85

$2.85

Min.: 1
Mult.: 1