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

R2-56X5/16 2701
APM HEXSEAL
1: $1.62
310Expected 9/10/2026

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

310Expected 9/10/2026

$1.62

$1.27

$1.16

$1.02

View

Min.: 1
Mult.: 1

Screws & Fasteners

R8-32x3/16 2701
APM HEXSEAL
1: $1.35
90In Stock

Mfr. Part No.
R8-32x3/16 2701

Mouser Part No
608-R8-32X3/162701

Screws & Fasteners

90In Stock

$1.35

$1.05

$0.957

$0.843

View

Min.: 1
Mult.: 1

Screws & Fasteners 1/4"-20X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R1/4-20X7/8 2701
APM HEXSEAL
1: $2.96
1In Stock

Mfr. Part No.
R1/4-20X7/8 2701

Mouser Part No
608-R1/4-20X7/8

Screws & Fasteners 1/4"-20X7/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

1In Stock

$2.96

$2.35

$1.99

$1.85

$1.28

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 1/2-13 THREAD

1/2-13 AJ 6
APM HEXSEAL
1: $6.75
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
1/2-13 AJ 6

Mouser Part No
608-1/2-13AJ6

Screws & Fasteners SEELNUTS 1/2-13 THREAD

Non-Stocked Lead-Time 10 Weeks

$6.75

$5.40

$4.46

$4.31

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 1/4-20 THREAD

1/4-20 AJ 6
APM HEXSEAL
1: $5.05
Non-Stocked Lead-Time 6 Weeks

Mfr. Part No.
1/4-20 AJ 6

Mouser Part No
608-1/4-20AJ6

Screws & Fasteners SEELNUTS 1/4-20 THREAD

Non-Stocked Lead-Time 6 Weeks

$5.05

$4.73

$4.13

$3.92

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 1/4-28 THREAD

1/4-28 AJ 6
APM HEXSEAL
1: $6.81
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
1/4-28 AJ 6

Mouser Part No
608-1/4-28AJ6

Screws & Fasteners SEELNUTS 1/4-28 THREAD

Non-Stocked Lead-Time 12 Weeks

$6.81

$5.47

$4.12

$4.11

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 3/8-16 THREAD

3/8-16 AJ 6
APM HEXSEAL
1: $5.45
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
3/8-16 AJ 6

Mouser Part No
608-3/8-16AJ6

Screws & Fasteners SEELNUTS 3/8-16 THREAD

Non-Stocked Lead-Time 12 Weeks

$5.45

$5.13

$4.49

$4.26

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 5/8-18 THREAD

5/8-18 AJ 6
APM HEXSEAL
25: $5.36
Non-Stocked Lead-Time 8 Weeks

Mfr. Part No.
5/8-18 AJ 6

Mouser Part No
608-5/8-18AJ6

Screws & Fasteners SEELNUTS 5/8-18 THREAD

Non-Stocked Lead-Time 8 Weeks

$5.36

$5.34

$5.18

$5.07

View

Min.: 25
Mult.: 25

Screws & Fasteners 6-32X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw

R6-32X5/16 2615
APM HEXSEAL
1: $1.40
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
R6-32X5/16 2615

Mouser Part No
608-R6-32X5/162615

Screws & Fasteners 6-32X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw

Non-Stocked Lead-Time 4 Weeks

$1.40

$1.09

$1.01

$0.861

View

Min.: 1
Mult.: 1

Screws & Fasteners 6-32X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R6-32X7/16 2701
APM HEXSEAL
1: $1.33
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
R6-32X7/16 2701

Mouser Part No
608-R6-32X7/16

Screws & Fasteners 6-32X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.33

$1.03

$0.774

$0.764

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: $4.45
Non-Stocked Lead-Time 3 Weeks

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

Non-Stocked Lead-Time 3 Weeks

$4.45

$3.55

$2.76

$2.75

View

Min.: 1
Mult.: 1

Screws & Fasteners

ST1/4-20X1-1/2 2701
APM HEXSEAL
25: $1.99
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
ST1/4-20X1-1/2 2701

Mouser Part No
608-ST1/4-20X1-1/2

Screws & Fasteners

Non-Stocked Lead-Time 4 Weeks

$1.99

$1.85

$1.73

$1.65

View

Min.: 25
Mult.: 25

Screws & Fasteners 3/8-16X3/4" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw

ST3/8-16X3/4 2701
APM HEXSEAL
1: $5.75
Non-Stocked Lead-Time 3 Weeks

Mfr. Part No.
ST3/8-16X3/4 2701

Mouser Part No
608-ST3/8-16X3/4

Screws & Fasteners 3/8-16X3/4" 18-8 Stainless Steel Self-Seal Silicone O-Ring, Hex Cap Screw

Datasheet

Non-Stocked Lead-Time 3 Weeks

$5.75

$4.75

$4.01

$3.77

$2.86

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 1/2-20 THREAD

1/2-20 AJ 6
APM HEXSEAL
1: $6.75
Non-Stocked

Mfr. Part No.
1/2-20 AJ 6

Mouser Part No
608-1/2-20AJ6

Screws & Fasteners SEELNUTS 1/2-20 THREAD

Non-Stocked

$6.75

$5.40

$4.46

$4.31

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 10-24 THREAD

10-24 AJ 6
APM HEXSEAL
25: $3.73
Non-Stocked

Mfr. Part No.
10-24 AJ 6

Mouser Part No
608-10-24AJ6

Screws & Fasteners SEELNUTS 10-24 THREAD

Non-Stocked

$3.73

$3.62

$3.54

$3.45

View

Min.: 25
Mult.: 25

Screws & Fasteners SEELNUTS 3/8-24 THREAD

3/8-24 AJ 6
APM HEXSEAL
25: $4.38
Non-Stocked

Mfr. Part No.
3/8-24 AJ 6

Mouser Part No
608-3/8-24AJ6

Screws & Fasteners SEELNUTS 3/8-24 THREAD

Non-Stocked

$4.38

$4.37

$4.22

$4.15

View

Min.: 25
Mult.: 25

Screws & Fasteners SEELNUTS 5/16-18 THREAD

5/16-18 AJ 6
APM HEXSEAL
1: $6.17
Non-Stocked

Mfr. Part No.
5/16-18 AJ 6

Mouser Part No
608-5/16-18AJ6

Screws & Fasteners SEELNUTS 5/16-18 THREAD

Non-Stocked

$6.17

$4.95

$4.12

$4.11

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 7/16-20 THREAD

7/16-20 AJ 6
APM HEXSEAL
25: $4.46
Non-Stocked

Mfr. Part No.
7/16-20 AJ 6

Mouser Part No
608-7/16-20AJ6

Screws & Fasteners SEELNUTS 7/16-20 THREAD

Non-Stocked

$4.46

$4.31

$4.23

$4.16

View

Min.: 25
Mult.: 25

Screws & Fasteners SEELNUTS 8-32 THREAD

8-32 AJ 6
APM HEXSEAL
1: $4.57
Non-Stocked

Mfr. Part No.
8-32 AJ 6

Mouser Part No
608-8-32AJ6

Screws & Fasteners SEELNUTS 8-32 THREAD

Non-Stocked

$4.57

$4.28

$3.74

$3.55

View

Min.: 1
Mult.: 1

Screws & Fasteners

R1/4-20X1-1/4 2701
APM HEXSEAL
50: $2.41
Non-Stocked

Mfr. Part No.
R1/4-20X1-1/4 2701

Mouser Part No
608-R1/4-20X1-1/4

Screws & Fasteners

Non-Stocked

$2.41

$2.26

$2.11

$2.00

View

Min.: 50
Mult.: 50

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

R1/4-20X1-1/8 2701
APM HEXSEAL
50: $4.46
Non-Stocked

Mfr. Part No.
R1/4-20X1-1/8 2701

Mouser Part No
608-R1/4-20X1-1/8

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

Non-Stocked

$4.46

$4.19

$3.93

$3.79

View

Min.: 50
Mult.: 50

Screws & Fasteners 1/4"-20X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R1/4-20X7/16 2701
APM HEXSEAL
1: $1.89
Non-Stocked

Mfr. Part No.
R1/4-20X7/16 2701

Mouser Part No
608-R1/4-20X7/16

Screws & Fasteners 1/4"-20X7/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Non-Stocked

$1.89

$1.62

$1.51

$1.43

View

Min.: 1
Mult.: 1

Screws & Fasteners 1/4"-20X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R1/4-20X9/16 2701
APM HEXSEAL
1: $7.96
Non-Stocked

Mfr. Part No.
R1/4-20X9/16 2701

Mouser Part No
608-R1/4-20X9/16

Screws & Fasteners 1/4"-20X9/16", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Non-Stocked

$7.96

$6.41

$6.23

$5.29

View

Min.: 1
Mult.: 1

Screws & Fasteners 10-24X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R10-24X1 2701
APM HEXSEAL
50: $1.47
Non-Stocked

Mfr. Part No.
R10-24X1 2701

Mouser Part No
608-R10-24X1

Screws & Fasteners 10-24X1", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

Datasheet

Non-Stocked

$1.47

$1.36

$0.94

Min.: 50
Mult.: 1

Screws & Fasteners PANHEAD PHILLIPS 10- 24THDx.5'"sili-orin

R10-24x1/2 2701
APM HEXSEAL
50: $1.17
Non-Stocked

Mfr. Part No.
R10-24x1/2 2701

Mouser Part No
608-R10-24X1/22701

Screws & Fasteners PANHEAD PHILLIPS 10- 24THDx.5'"sili-orin

Datasheet

Non-Stocked

$1.17

$1.08

$0.698

Min.: 50
Mult.: 50