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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Product	Type	Thread Size	Material	Color	Packaging
Conduit Fittings & Accessories LTTVP NPT 3/8 .83X.69 3545VB Heyco 1: $4.30 3,136In Stock	Mfr. Part # 3545VB Mouser Part # 836-3545VB	Heyco	Conduit Fittings & Accessories LTTVP NPT 3/8 .83X.69 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	3,136In Stock	$4.30 $3.67 $3.43 $3.28 $3.16	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	3/8 in NPT	Nylon	Black	Bulk
Conduit Fittings & Accessories LTTVP M16 .83X.53 3583VB Heyco 1: $4.30 5,477In Stock	Mfr. Part # 3583VB Mouser Part # 836-3583VB	Heyco	Conduit Fittings & Accessories LTTVP M16 .83X.53 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	5,477In Stock	$4.30 $3.67 $3.43 $3.35 $2.83	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	M16	Nylon	Black
Conduit Fittings & Accessories LTTVP PG 7 .63X.53 3574VB Heyco 1: $4.10 1,195In Stock	Mfr. Part # 3574VB Mouser Part # 836-3574VB	Heyco	Conduit Fittings & Accessories LTTVP PG 7 .63X.53 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	1,195In Stock	$4.10 $3.48 $3.26 $3.11 View $2.63 $2.52 $2.43 $2.37 $2.33	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	PG7	Nylon	Black
Conduit Fittings & Accessories LTTVP M20 .98X.62 3584VB Heyco 1: $4.33 642In Stock	Mfr. Part # 3584VB Mouser Part # 836-3584VB	Heyco	Conduit Fittings & Accessories LTTVP M20 .98X.62 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	642In Stock	$4.33 $3.68 $3.46 $3.29 View $3.20 $2.73 $2.56	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	M20	Nylon	Black
Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY 3544V Heyco 1: $4.10 502In Stock	Mfr. Part # 3544V Mouser Part # 836-3544V	Heyco	Conduit Fittings & Accessories LTTVP NPT 1/4 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	502In Stock	$4.10 $3.48 $3.26 $3.11 View $2.95 $2.94 $2.81 $2.70 $2.57	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	1/4 in NPT	Nylon	Gray
Conduit Fittings & Accessories LTTVP PG 21 1.29X.76 3401VB Heyco 1: $4.49 58In Stock	Mfr. Part # 3401VB Mouser Part # 836-3401VB	Heyco	Conduit Fittings & Accessories LTTVP PG 21 1.29X.76 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	58In Stock	$4.49 $3.81 $3.58 $3.41 View $2.89 $2.80 $2.74 $2.56	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	PG21	Nylon	Black
Conduit Fittings & Accessories LTTVP M20 GRAY 3584V Heyco 1: $4.33 15In Stock	Mfr. Part # 3584V Mouser Part # 836-3584V	Heyco	Conduit Fittings & Accessories LTTVP M20 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	15In Stock	$4.33 $3.68 $3.46 $3.29 View $3.12 $3.11 $2.98 $2.86 $2.72	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight		Nylon	Gray
Conduit Fittings & Accessories LTTVP M12 .63X.53 3582VB Heyco 1: $3.59 11,234In Stock	Mfr. Part # 3582VB Mouser Part # 836-3582VB	Heyco	Conduit Fittings & Accessories LTTVP M12 .63X.53 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	11,234In Stock	$3.59 $3.28 $3.11 $2.91 View $2.70 $2.43 $2.31 $2.16	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	M12	Nylon	Black
Conduit Fittings & Accessories LTTVP NPT 1/4 BLK 3544VB Heyco 1: $3.64 4,484In Stock	Mfr. Part # 3544VB Mouser Part # 836-3544VB	Heyco	Conduit Fittings & Accessories LTTVP NPT 1/4 BLK Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	4,484In Stock	$3.64 $3.41 $3.12 $2.91 View $2.70 $2.43 $2.31 $2.16	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	1/4 in NPT	Nylon	Black
Conduit Fittings & Accessories LTTVP NPT 1/2 .98X.81 3546VB Heyco 1: $3.85 958In Stock 1,400Expected 10/23/2026	Mfr. Part # 3546VB Mouser Part # 836-3546VB	Heyco	Conduit Fittings & Accessories LTTVP NPT 1/2 .98X.81 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	958In Stock 1,400Expected 10/23/2026	$3.85 $3.60 $3.29 $3.08 View $2.86 $2.57 $2.44 $2.29	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	1/2 in NPT	Nylon	Black
Conduit Fittings & Accessories LTTVP NPT 3/4 1.29X.86 3547VB Heyco 1: $5.67 258In Stock 2,100On Order	Mfr. Part # 3547VB Mouser Part # 836-3547VB	Heyco	Conduit Fittings & Accessories LTTVP NPT 3/4 1.29X.86 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	258In Stock 2,100On Order On Order Ship Dates Mfr. #: 3547VB Stock: 258 Can Ship Immediately On Order: 600 Expected 10/29/2026 1,400 Expected 11/4/2026 100 Expected 12/9/2026 Factory Lead-Time: 8 Weeks	$5.67 $5.24 $4.85 $4.54 View $4.23 $3.80 $3.46 $3.32 $3.11	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	3/4 in NPT	Nylon	Black
Conduit Fittings & Accessories LTTVP M12 GRAY 3582V Heyco 1: $4.10 41In Stock	Mfr. Part # 3582V Mouser Part # 836-3582V	Heyco	Conduit Fittings & Accessories LTTVP M12 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	41In Stock	$4.10 $3.48 $3.26 $3.11 View $2.95 $2.89 $2.78 $2.63 $2.52	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Vent Plug, Liquid Tight	M12	Nylon	Gray
Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY 3546V Heyco 1: $4.33 100Factory Stock Available	Mfr. Part # 3546V Mouser Part # 836-3546V	Heyco	Conduit Fittings & Accessories LTTVP NPT 1/2 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	100Factory Stock Available More Info Available	$4.33 $3.68 $3.46 $3.29 View $3.12 $3.00 $2.90 $2.76	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	NPT 1/2 in	Nylon	Gray
Conduit Fittings & Accessories LTTVP PG9 GRAY 3575V Heyco 1: $4.30 100Factory Stock Available	Mfr. Part # 3575V Mouser Part # 836-3575V	Heyco	Conduit Fittings & Accessories LTTVP PG9 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	100Factory Stock Available More Info Available	$4.30 $3.67 $3.61 $3.06 View $2.95 $2.78 $2.65	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	PG9	Nylon	Gray
Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY 3547V Heyco 1: $6.28 400Factory Stock Available	Mfr. Part # 3547V Mouser Part # 836-3547V	Heyco	Conduit Fittings & Accessories LTTVP NPT 3/4 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	400Factory Stock Available More Info Available	$6.28 $6.21 $4.93 $4.38 View $4.33 $4.11	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	NPT 3/4 in	Nylon	Gray
Conduit Fittings & Accessories LTTVP PG7 GRAY 3574V Heyco 1: $4.10 Non-Stocked Lead-Time 6 Weeks	Mfr. Part # 3574V Mouser Part # 836-3574V	Heyco	Conduit Fittings & Accessories LTTVP PG7 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked Lead-Time 6 Weeks	$4.10 $3.48 $3.43 $2.91 View $2.80 $2.64 $2.52	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	PG7	Nylon	Gray
Conduit Fittings & Accessories LTTVP PG9 BLACK 3575VB Heyco 1: $4.30 Non-Stocked Lead-Time 6 Weeks	Mfr. Part # 3575VB Mouser Part # 836-3575VB	Heyco	Conduit Fittings & Accessories LTTVP PG9 BLACK Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked Lead-Time 6 Weeks	$4.30 $3.67 $3.43 $3.28 View $2.99 $2.87 $2.81 $2.72 $2.55	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	PG9	Nylon	Black
Conduit Fittings & Accessories LTTVP PG13.5 GRAY 3576V Heyco 1: $4.33 Non-Stocked Lead-Time 6 Weeks	Mfr. Part # 3576V Mouser Part # 836-3576V	Heyco	Conduit Fittings & Accessories LTTVP PG13.5 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked Lead-Time 6 Weeks	$4.33 $3.68 $3.46 $3.29 View $3.12 $3.03 $2.91 $2.81 $2.67	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight	PG13.5	Nylon	Gray
Conduit Fittings & Accessories LTTVP M16 GRAY 3583V Heyco 1: $4.30 Non-Stocked Lead-Time 6 Weeks	Mfr. Part # 3583V Mouser Part # 836-3583V	Heyco	Conduit Fittings & Accessories LTTVP M16 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked Lead-Time 6 Weeks	$4.30 $3.67 $3.59 $3.04 View $2.93 $2.77 $2.63	Min.: 1 Mult.: 1	Hole Plugs		Threaded Vent Plug, Liquid Tight		Nylon	Gray
Conduit Fittings & Accessories LTTVP PG21 GRAY 3401V Heyco 1: $4.49 Non-Stocked	Mfr. Part # 3401V Mouser Part # 836-3401V	Heyco	Conduit Fittings & Accessories LTTVP PG21 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked	$4.49 $3.81 $3.58 $3.41 View $3.12 $3.00 $2.93 $2.83 $2.65	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: $4.30 Non-Stocked	Mfr. Part # 3545V Mouser Part # 836-3545V	Heyco	Conduit Fittings & Accessories LTTVP NPT 3/8 GRAY Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked	$4.30 $3.67 $3.43 $3.28 View $3.08 $2.98 $2.87 $2.73	Min.: 1 Mult.: 1	Hole Plugs		Vent Plug	NPT 3/8 in	Nylon	Gray
Conduit Fittings & Accessories LTTVP PG 13.5 .98X.62 3576VB Heyco 1: $3.51 Non-Stocked	Mfr. Part # 3576VB Mouser Part # 836-3576VB	Heyco	Conduit Fittings & Accessories LTTVP PG 13.5 .98X.62 Learn More about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked	$3.51 $3.15 $3.04 $2.57 View $2.51 $2.37	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 Heyco 3584VL 3584VL Heyco 500: $3.52 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 about Heyco heyclean liquid tight threaded vent plugs	Datasheet	Non-Stocked Lead-Time 6 Weeks	$3.52 $3.46 $3.38	Min.: 500 Mult.: 500	Hole Plugs		Threaded Vent Plug, Liquid Tight		Nylon	Gray

HEYClean™ Liquid Tight Threaded Vent Plugs

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