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

R6-32X1/4 2701
APM HEXSEAL
1: $0.938
2,410In Stock

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

2,410In Stock

$0.938

$0.759

$0.70

$0.636

View

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: $0.898
681In 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

681In Stock

$0.898

$0.762

$0.713

$0.67

View

Min.: 1
Mult.: 1

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

R6-32X3/8 2701
APM HEXSEAL
1: $0.802
377In Stock
1,000Expected 14/9/2026

Mfr. Part No.
R6-32X3/8 2701

Mouser Part No
608-R6-32X3/8

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

Datasheet

377In Stock

1,000Expected 14/9/2026

$0.802

$0.675

$0.631

$0.594

View

Min.: 1
Mult.: 1

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

R6-32X5/16 2701
APM HEXSEAL
1: $0.802
703In Stock

Mfr. Part No.
R6-32X5/16 2701

Mouser Part No
608-R6-32X5/16

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

Datasheet

703In Stock

$0.802

$0.675

$0.631

$0.594

View

Min.: 1
Mult.: 1

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

R6-32X5/8 2701
APM HEXSEAL
1: $1.06
854In Stock

Mfr. Part No.
R6-32X5/8 2701

Mouser Part No
608-R6-32X5/8

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

Datasheet

854In Stock

$1.06

$0.903

$0.847

$0.797

View

Min.: 1
Mult.: 1

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

R6-32X7/8 2701
APM HEXSEAL
1: $1.13
27In Stock

Mfr. Part No.
R6-32X7/8 2701

Mouser Part No
608-R6-32X7/8

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

27In Stock

$1.13

$0.96

$0.90

$0.847

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: $0.83
1,231In Stock

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

1,231In Stock

$0.83

$0.704

$0.658

$0.62

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: $1.06
136In 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

136In Stock

$1.06

$0.903

$0.847

$0.797

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: $1.10
111In 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

111In Stock

$1.10

$0.932

$0.873

$0.823

View

Min.: 1
Mult.: 1

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

RM4X20MM-2701
APM HEXSEAL
1: $0.884
1,141In 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

1,141In Stock

$0.884

$0.832

$0.713

$0.67

View

Min.: 1
Mult.: 1

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

SFR4-40 X 1/4 2701
APM HEXSEAL
1: $0.952
2,460In 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

2,460In Stock

$0.952

$0.734

$0.669

$0.589

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELNUTS 5/16-24 THREAD

5/16-24 AJ 6
APM HEXSEAL
1: $5.05
15In Stock

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

Mouser Part No
608-5/16-24AJ6

Screws & Fasteners SEELNUTS 5/16-24 THREAD

15In Stock

$5.05

$4.73

$4.13

$3.92

View

Min.: 1
Mult.: 1

Screws & Fasteners 1/4"-20X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

R1/4-20X5/8 2701
APM HEXSEAL
1: $2.12
65In Stock

Mfr. Part No.
R1/4-20X5/8 2701

Mouser Part No
608-R1/4-20X5/8

Screws & Fasteners 1/4"-20X5/8", Phillips Pan Head, 18-8 Stainless Steel with Silicone O-Ring, Seal Screw

65In Stock

$2.12

$1.82

$1.70

$1.62

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: $1.41
3In 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

3In Stock

$1.41

$1.21

$1.14

$1.07

View

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: $1.51
196In Stock

Mfr. Part No.
R10-32X3/4 2701

Mouser Part No
608-R10-32X3/4

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

Datasheet

196In Stock

$1.51

$1.29

$1.21

$1.14

View

Min.: 1
Mult.: 1

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

R8-32X3/4 2701
APM HEXSEAL
1: $1.22
102In Stock

Mfr. Part No.
R8-32X3/4 2701

Mouser Part No
608-R8-32X3/4

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

Datasheet

102In Stock

$1.22

$1.04

$0.979

$0.922

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: $1.20
30In 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

30In Stock

$1.20

$1.02

$0.953

$0.898

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: $1.28
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

$1.28

$1.20

$1.03

$0.972

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: $1.03
29In 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

29In Stock

$1.03

$0.90

$0.879

$0.87

View

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: $0.952
82In 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

82In Stock

$0.952

$0.734

$0.669

$0.57

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: $1.58
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

$1.58

$1.27

$1.08

$0.996

$0.676

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW 6-32 X 5/8 WITH VITON O-RING

R6-32X5/8-5701
APM HEXSEAL
1: $1.58
4In Stock
Factory Special Order

Mfr. Part No.
R6-32X5/8-5701

Mouser Part No
608-R6-32X5/8-5701

Factory Special Order

Screws & Fasteners SEELSKREW 6-32 X 5/8 WITH VITON O-RING

4In Stock

$1.58

View

Min.: 1
Mult.: 1

Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG

R4-40X3/16 2701
APM HEXSEAL
1: $1.20
10,970Expected 8/9/2026

Mfr. Part No.
R4-40X3/16 2701

Mouser Part No
608-R4-40X3/162701

Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG

10,970Expected 8/9/2026

$1.20

$0.947

$0.802

$0.737

View

Min.: 1
Mult.: 1

Screws & Fasteners

SFR6-32 x 3/8 2701
APM HEXSEAL
1: $1.24
4,081On Order

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

Mouser Part No
608-SFR6-323/82701

Screws & Fasteners

4,081On Order

$1.24

$0.955

$0.724

$0.709

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: $1.60
41Expected 25/9/2026

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

41Expected 25/9/2026

$1.60

$1.37

$1.29

$1.22

View

Min.: 1
Mult.: 1