Conduit Fittings & Accessories

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HEYClean™ Liquid Tight Threaded Vent Plugs

Heyco HEYClean™ Liquid Tight Threaded Vent Plugs are IP65, IP67, and IP68 rated and feature an integral sealing ring for a superior seal at the mounting hole. HEYClean Liquid Tight Threaded Vent Plugs allow the passage of air for pressure equalization while preventing moisture intrusion, remaining liquid tight. A pressure-compensating seal prevents the buildup of pressure inside electronic enclosures caused by environmental temperature cycling. These Heyco plugs are UL rated for Type NEMA 3R, 4, and 4X applications and represent a cost-effective alternative to metal or steel plugs.

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Part #

Conduit Fittings & Accessories LTTVP NPT 3/8 .83X.69

3545VB
Heyco
1: $4.32
459In Stock
500Expected 11/3/2026

Mfr. Part No.
3545VB

Mouser Part No
836-3545VB

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/8 .83X.69

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Datasheet

459In Stock

500Expected 11/3/2026

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

3/8 in NPT

Nylon

Black

Bulk

Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY

3544V
Heyco
1: $4.11
1,270In Stock

Mfr. Part No.
3544V

Mouser Part No
836-3544V

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY

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Datasheet

1,270In Stock

$4.11

$3.50

$3.28

$3.13

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/4 in NPT

Nylon

Gray

Conduit Fittings & Accessories LTTVP M16 .83X.53

3583VB
Heyco
1: $4.32
895In Stock
6,700On Order

Mfr. Part No.
3583VB

Mouser Part No
836-3583VB

Heyco

Conduit Fittings & Accessories LTTVP M16 .83X.53

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Datasheet

895In Stock

6,700On Order

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M16

Nylon

Black

Conduit Fittings & Accessories LTTVP M20 .98X.62

3584VB
Heyco
1: $4.35
1,749In Stock

Mfr. Part No.
3584VB

Mouser Part No
836-3584VB

Heyco

Conduit Fittings & Accessories LTTVP M20 .98X.62

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Datasheet

1,749In Stock

$4.35

$3.70

$3.48

$3.31

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M20

Nylon

Black

Conduit Fittings & Accessories LTTVP PG 7 .63X.53

3574VB
Heyco
1: $4.11
1,440In Stock

Mfr. Part No.
3574VB

Mouser Part No
836-3574VB

Heyco

Conduit Fittings & Accessories LTTVP PG 7 .63X.53

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Datasheet

1,440In Stock

$4.11

$3.50

$3.28

$3.13

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG7

Nylon

Black

Conduit Fittings & Accessories LTTVP PG 21 1.29X.76

3401VB
Heyco
1: $4.50
116In Stock

Mfr. Part No.
3401VB

Mouser Part No
836-3401VB

Heyco

Conduit Fittings & Accessories LTTVP PG 21 1.29X.76

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Datasheet

116In Stock

$4.50

$3.84

$3.59

$3.42

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG21

Nylon

Black

Conduit Fittings & Accessories LTTVP M20 GRAY

3584V
Heyco
1: $4.35
35In Stock

Mfr. Part No.
3584V

Mouser Part No
836-3584V

Heyco

Conduit Fittings & Accessories LTTVP M20 GRAY

Learn More

Datasheet

35In Stock

$4.35

$3.70

$3.48

$3.31

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 1/4 BLK

3544VB
Heyco
1: $3.77
2,310In Stock

Mfr. Part No.
3544VB

Mouser Part No
836-3544VB

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/4 BLK

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Datasheet

2,310In Stock

$3.77

$3.53

$3.27

$3.09

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/4 in NPT

Nylon

Black

Conduit Fittings & Accessories LTTVP M12 .63X.53

3582VB
Heyco
1: $3.36
3,029In Stock
5,600Expected 25/2/2026

Mfr. Part No.
3582VB

Mouser Part No
836-3582VB

Heyco

Conduit Fittings & Accessories LTTVP M12 .63X.53

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Datasheet

3,029In Stock

5,600Expected 25/2/2026

$3.36

$2.82

$2.50

$2.32

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M12

Nylon

Black

Conduit Fittings & Accessories LTTVP NPT 3/4 1.29X.86

3547VB
Heyco
1: $4.11
328In Stock
400Expected 11/3/2026

Mfr. Part No.
3547VB

Mouser Part No
836-3547VB

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/4 1.29X.86

Learn More

Datasheet

328In Stock

400Expected 11/3/2026

$4.11

$3.85

$3.56

$3.36

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

3/4 in NPT

Nylon

Black

Conduit Fittings & Accessories LTTVP M12 GRAY

3582V
Heyco
1: $4.11
100In Stock

Mfr. Part No.
3582V

Mouser Part No
836-3582V

Heyco

Conduit Fittings & Accessories LTTVP M12 GRAY

Learn More

Datasheet

100In Stock

$4.11

$3.50

$3.28

$3.13

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M12

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 1/2 .98X.81

3546VB
Heyco
1: $3.98
Lead-Time 3 Weeks

Mfr. Part No.
3546VB

Mouser Part No
836-3546VB

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/2 .98X.81

Learn More

Datasheet

Lead-Time 3 Weeks

$3.98

$3.70

$3.45

$3.27

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/2 in NPT

Nylon

Black

Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY

3547V
Heyco
1: $6.10
Non-Stocked Lead-Time 6 Weeks

Mfr. Part No.
3547V

Mouser Part No
836-3547V

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

$6.10

$4.06

$3.43

$3.22

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

NPT 3/4 in

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG21 GRAY

3401V
Heyco
1: $4.50
Non-Stocked

Mfr. Part No.
3401V

Mouser Part No
836-3401V

Heyco

Conduit Fittings & Accessories LTTVP PG21 GRAY

Learn More

Datasheet

Non-Stocked

$4.50

$3.84

$3.59

$3.42

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG21

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY

3546V
Heyco
1: $4.35
Non-Stocked

Mfr. Part No.
3546V

Mouser Part No
836-3546V

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY

Learn More

Datasheet

Non-Stocked

$4.35

$3.70

$3.48

$3.31

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

NPT 1/2 in

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG7 GRAY

3574V
Heyco
1: $4.11
Non-Stocked

Mfr. Part No.
3574V

Mouser Part No
836-3574V

Heyco

Conduit Fittings & Accessories LTTVP PG7 GRAY

Learn More

Datasheet

Non-Stocked

$4.11

$3.50

$3.28

$3.13

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG7

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG9 GRAY

3575V
Heyco
1: $4.32
Non-Stocked

Mfr. Part No.
3575V

Mouser Part No
836-3575V

Heyco

Conduit Fittings & Accessories LTTVP PG9 GRAY

Learn More

Datasheet

Non-Stocked

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG9

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG9 BLACK

3575VB
Heyco
1: $4.32
Non-Stocked

Mfr. Part No.
3575VB

Mouser Part No
836-3575VB

Heyco

Conduit Fittings & Accessories LTTVP PG9 BLACK

Learn More

Datasheet

Non-Stocked

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG9

Nylon

Black

Conduit Fittings & Accessories LTTVP PG13.5 GRAY

3576V
Heyco
1: $4.35
Non-Stocked

Mfr. Part No.
3576V

Mouser Part No
836-3576V

Heyco

Conduit Fittings & Accessories LTTVP PG13.5 GRAY

Learn More

Datasheet

Non-Stocked

$4.35

$3.70

$3.48

$3.31

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG13.5

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG 13.5 .98X.62

3576VB
Heyco
1: $3.52
Non-Stocked

Mfr. Part No.
3576VB

Mouser Part No
836-3576VB

Heyco

Conduit Fittings & Accessories LTTVP PG 13.5 .98X.62

Learn More

Datasheet

Non-Stocked

$3.52

$3.16

$3.03

$2.93

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG13.5

Nylon

Black

Conduit Fittings & Accessories LTTVP M16 GRAY

3583V
Heyco
1: $4.32
Non-Stocked

Mfr. Part No.
3583V

Mouser Part No
836-3583V

Heyco

Conduit Fittings & Accessories LTTVP M16 GRAY

Learn More

Datasheet

Non-Stocked

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 3/8 GRAY

3545V
Heyco
1: $4.32
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
3545V

Mouser Part No
836-3545V

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/8 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

$4.32

$3.68

$3.45

$3.28

View

Min.: 1
Mult.: 1

Hole Plugs

Vent Plug

NPT 3/8 in

Nylon

Gray

Conduit Fittings & Accessories LTTVP M20 GRAY W/9135 NUT ASSY

3584VL
Heyco
500: $3.54
Non-Stocked

Mfr. Part No.
3584VL

Mouser Part No
836-3584VL

Heyco

Conduit Fittings & Accessories LTTVP M20 GRAY W/9135 NUT ASSY

Learn More

Datasheet

Non-Stocked

$3.54

$3.48

$3.39

Min.: 500
Mult.: 500

Hole Plugs

Threaded Vent Plug, Liquid Tight

Nylon

Gray

HEYClean™ Liquid Tight Threaded Vent Plugs

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