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: S/12.42
1,740In Stock
3,000Expected 7/31/2026

Mfr. Part #
3545VB

Mouser Part #
836-3545VB

Heyco

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

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Datasheet

1,740In Stock

3,000Expected 7/31/2026

S/12.42

S/10.55

S/9.89

S/9.42

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

3/8 in NPT

Nylon

Black

Bulk

Conduit Fittings & Accessories LTTVP M20 .98X.62

3584VB
Heyco
1: S/12.57
1,114In Stock

Mfr. Part #
3584VB

Mouser Part #
836-3584VB

Heyco

Conduit Fittings & Accessories LTTVP M20 .98X.62

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Datasheet

1,114In Stock

S/12.57

S/10.70

S/10.00

S/9.54

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M20

Nylon

Black

Conduit Fittings & Accessories LTTVP M16 .83X.53

3583VB
Heyco
1: S/12.42
5,477In Stock

Mfr. Part #
3583VB

Mouser Part #
836-3583VB

Heyco

Conduit Fittings & Accessories LTTVP M16 .83X.53

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Datasheet

5,477In Stock

S/12.42

S/10.55

S/9.89

S/9.42

S/9.19

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M16

Nylon

Black

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

3547VB
Heyco
1: S/17.05
123In Stock
1,300On Order

Mfr. Part #
3547VB

Mouser Part #
836-3547VB

Heyco

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

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Datasheet

123In Stock

1,300On Order

S/17.05

S/16.04

S/14.87

S/14.05

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

3/4 in NPT

Nylon

Black

Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY

3544V
Heyco
1: S/11.91
82In Stock
500Expected 9/30/2026

Mfr. Part #
3544V

Mouser Part #
836-3544V

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY

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Datasheet

82In Stock

500Expected 9/30/2026

S/11.91

S/10.12

S/9.50

S/9.03

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/4 in NPT

Nylon

Gray

Conduit Fittings & Accessories LTTVP M20 GRAY

3584V
Heyco
1: S/12.61
35In Stock

Mfr. Part #
3584V

Mouser Part #
836-3584V

Heyco

Conduit Fittings & Accessories LTTVP M20 GRAY

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Datasheet

35In Stock

S/12.61

S/10.74

S/10.04

S/9.58

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: S/11.52
3,181In Stock
3,200Expected 8/19/2026

Mfr. Part #
3544VB

Mouser Part #
836-3544VB

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/4 BLK

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Datasheet

3,181In Stock

3,200Expected 8/19/2026

S/11.52

S/10.51

S/10.00

S/9.46

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/4 in NPT

Nylon

Black

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

3574VB
Heyco
1: S/11.91
1,200In Stock

Mfr. Part #
3574VB

Mouser Part #
836-3574VB

Heyco

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

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Datasheet

1,200In Stock

S/11.91

S/10.12

S/9.50

S/9.03

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG7

Nylon

Black

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

3546VB
Heyco
1: S/12.18
52In Stock
2,000Expected 9/9/2026

Mfr. Part #
3546VB

Mouser Part #
836-3546VB

Heyco

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

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Datasheet

52In Stock

2,000Expected 9/9/2026

S/12.18

S/11.02

S/10.20

S/9.81

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

1/2 in NPT

Nylon

Black

Conduit Fittings & Accessories LTTVP M12 GRAY

3582V
Heyco
1: S/11.91
79In Stock

Mfr. Part #
3582V

Mouser Part #
836-3582V

Heyco

Conduit Fittings & Accessories LTTVP M12 GRAY

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Datasheet

79In Stock

S/11.91

S/10.12

S/9.58

S/8.56

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M12

Nylon

Gray

Conduit Fittings & Accessories LTTVP M12 .63X.53

3582VB
Heyco
1: S/9.69
300In Stock
14,500On Order

Mfr. Part #
3582VB

Mouser Part #
836-3582VB

Heyco

Conduit Fittings & Accessories LTTVP M12 .63X.53

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Datasheet

300In Stock

14,500On Order

S/9.69

S/8.33

S/7.75

S/7.67

S/7.63

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

M12

Nylon

Black

Conduit Fittings & Accessories LTTVP PG 21 1.29X.76

3401VB
Heyco
1: S/12.96
84In Stock

Mfr. Part #
3401VB

Mouser Part #
836-3401VB

Heyco

Conduit Fittings & Accessories LTTVP PG 21 1.29X.76

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Datasheet

84In Stock

S/12.96

S/11.02

S/10.35

S/9.58

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG21

Nylon

Black

Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY

3546V
Heyco
1: S/12.61
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3546V

Mouser Part #
836-3546V

Heyco

Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/12.61

S/10.74

S/10.04

S/9.58

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: S/11.91
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3574V

Mouser Part #
836-3574V

Heyco

Conduit Fittings & Accessories LTTVP PG7 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/11.91

S/10.12

S/9.50

S/9.03

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG7

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG9 GRAY

3575V
Heyco
1: S/12.46
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3575V

Mouser Part #
836-3575V

Heyco

Conduit Fittings & Accessories LTTVP PG9 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/12.46

S/10.59

S/9.93

S/9.46

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG9

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG9 BLACK

3575VB
Heyco
1: S/12.42
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3575VB

Mouser Part #
836-3575VB

Heyco

Conduit Fittings & Accessories LTTVP PG9 BLACK

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/12.42

S/10.55

S/9.89

S/9.42

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: S/12.57
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3576V

Mouser Part #
836-3576V

Heyco

Conduit Fittings & Accessories LTTVP PG13.5 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/12.57

S/10.70

S/10.00

S/9.54

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG13.5

Nylon

Gray

Conduit Fittings & Accessories LTTVP M16 GRAY

3583V
Heyco
1: S/12.46
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3583V

Mouser Part #
836-3583V

Heyco

Conduit Fittings & Accessories LTTVP M16 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/12.46

S/10.59

S/9.93

S/9.46

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

Nylon

Gray

Conduit Fittings & Accessories LTTVP PG21 GRAY

3401V
Heyco
1: S/12.92
Non-Stocked

Mfr. Part #
3401V

Mouser Part #
836-3401V

Heyco

Conduit Fittings & Accessories LTTVP PG21 GRAY

Learn More

Datasheet

Non-Stocked

S/12.92

S/10.98

S/10.32

S/9.81

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG21

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 3/8 GRAY

3545V
Heyco
1: S/12.42
Non-Stocked Lead-Time 4 Weeks

Mfr. Part #
3545V

Mouser Part #
836-3545V

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/8 GRAY

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

S/12.42

S/10.55

S/9.89

S/9.42

View

Min.: 1
Mult.: 1

Hole Plugs

Vent Plug

NPT 3/8 in

Nylon

Gray

Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY

3547V
Heyco
1: S/17.71
Non-Stocked

Mfr. Part #
3547V

Mouser Part #
836-3547V

Heyco

Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY

Learn More

Datasheet

Non-Stocked

S/17.71

S/15.03

S/14.09

S/13.43

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

NPT 3/4 in

Nylon

Gray

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

3576VB
Heyco
1: S/10.20
Non-Stocked

Mfr. Part #
3576VB

Mouser Part #
836-3576VB

Heyco

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

Learn More

Datasheet

Non-Stocked

S/10.20

S/9.15

S/8.76

S/8.49

View

Min.: 1
Mult.: 1

Hole Plugs

Threaded Vent Plug, Liquid Tight

PG13.5

Nylon

Black

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

3584VL
Heyco
500: S/10.43
Non-Stocked Lead-Time 6 Weeks

Mfr. Part #
3584VL

Mouser Part #
836-3584VL

Heyco

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

Learn More

Datasheet

Non-Stocked Lead-Time 6 Weeks

S/10.43

S/9.93

S/9.30

Min.: 500
Mult.: 500

Hole Plugs

Threaded Vent Plug, Liquid Tight

Nylon

Gray

HEYClean™ Liquid Tight Threaded Vent Plugs

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