Factory Direct Waterproof Anti-Leak Forklift Battery Vent Plug Dual Sizes 75mm/92mm LK-CAP-5 LK-CAP-6 For Industrial Electric Forklift Pallet Stacker Lead Acid Storage Battery Accessories

LK-CAP-5 and LK-CAP-6 Waterproof Vent Plugs 75mm and 92mm

Two sizes, one anti-leak design: 75mm (M) and 92mm (L), waterproof vent plug with a dual-layer labyrinth, for industrial electric forklift, pallet stacker and lead acid storage battery maintenance.

The Four Design Points

Flip-top, integrated

The top opens without unscrewing the plug, so water goes in quickly and the cap cannot be lost or left off. That is a small thing until you watch someone water twenty-four cells with a jug.

Dual-layer labyrinth vent

Charging gas leaves through a path that turns on itself; acid mist does not follow it out. Fewer deposits on the battery top means less corrosion creep along the casing and the interlinks, which is where older packs look their age first.

Thickened rubber sealing ring

The seal is the part that decides whether a plug weeps. A thicker ring holds its compression longer, so the cap stays leakproof after months of being opened and closed.

Multi-hole pressure relief

Several small vents balance internal pressure rather than one large one, which keeps venting even across the cell and reduces the chance of electrolyte being carried out with the gas.

Universal Thread

The thread is the common size for traction batteries, so the plug fits most domestic and imported forklift batteries without adaptation. That is worth stating plainly because it is the single most common question: the length differs between the two models, the thread does not.

Specification

Where They Are Used

Electric forklifts, pallet stackers and lead acid storage batteries, anywhere a cell has to be vented, watered by hand when needed, and kept from spilling acid onto the surrounding hardware.

Choosing the Size

Measure the depth from the top of the cell opening to the electrolyte, or match the cap being replaced. A 92mm cap in a 75mm opening stands proud and gets knocked; a 75mm cap in a 92mm opening does not reach the seat.

Seal Care

The rubber ring is the part that keeps acid in and water vapour where it belongs. Keep it free of dried electrolyte, and if a cap has been off a cell for a while, wipe the ring before refitting rather than pressing grit into the seat. A hardened ring is the point at which a cap starts to weep, and a weeping cap is what produces the crust around a battery top.

Supply

Supplied direct, with stable stock and bulk pricing. For a fleet, ordering both sizes in one shipment is usually cheaper than a second order for the four cells that turned out to be deeper than the rest.

FAQ

Which of the two sizes do I need?

The length differs, not the thread. LK-CAP-5 at 75mm suits the common cell opening; LK-CAP-6 at 92mm suits deeper openings and larger cell bodies.

Will the plug fit imported batteries?

The thread is the common traction battery size, so the plug fits most domestic and imported forklift batteries without adaptation.

What are the functions covered?

Electrolyte filling, hydrogen pressure relief, acid mist backflow prevention and splash protection, in an acid-proof PP body with an NBR seal.

Send your cell opening depth and quantity to confirm the size for your pack.