12 Pcs Hydraulic Jack Oil Plug Fit Hole of 5/16", Flat-Head Rubber Floor Accessories Replacement Parts Horizontal Bung Universal Rubber Filler Bung for Oil Reservoir Filler Hole

The rubber bung in the top of a trolley jack is a five-cent part that ruins an afternoon. It perishes, works loose, and then the jack weeps oil across the shed floor every time the handle goes down. This is a twelve-pack of flat-head replacement bungs, sized for a 5/16 in filler hole.

Sized to the hole, not to a brand

One measurement decides whether these work, and the supplier publishes it: the plug suits a 5/16 in filler hole. That covers a lot of trolley jacks and bottle jacks, but not all of them, and no specific jack brands or models are named anywhere in the supplier's data. Pull the old bung out, measure across the opening, and buy on that figure rather than on the badge cast into the jack. A plug that is close but not right will seat, then push itself back out under pressure.

Rubber that you can pull and refit

The bung is moulded rubber with a flat head that sits level with the reservoir boss instead of standing proud where it can catch. Because it is rubber rather than a one-shot press-in fitting, the same plug comes out for a top-up and goes back in again. Twelve in the pack means spares live in the toolbox rather than being ordered one at a time.

Key features

• Twelve per pack: enough to service several jacks and still keep spares on the shelf.
• Flat head: sits flush in the filler boss rather than proud of it.
• Reusable rubber: can be removed for a top-up and pressed back in, unlike a single-use fitting.
• Aftermarket replacement: supplied as an alternative part, not as a jack manufacturer's own item.

Specifications

• Quantity: 12
• Fits filler hole: 5/16 in — the only size figure the supplier publishes
• Material: rubber
• Head style: flat
• Overall length, shank diameter and rubber hardness: not published
• Compatible jack brands and models: none named by the supplier

Before you order

• Measure your jack's filler hole. This plug is listed for 5/16 in only, and no jack makes or models are specified.
• A jack leaking from the ram or the base is not fixed by a new bung. Have it inspected before it goes back under a vehicle.
• A jack lifts a vehicle; stands hold it. Never work under a car supported only by a jack.

If the hole measures 5/16 in, this is the cheap fix that saves a jack from the tip.

Returns, Refunds, and Replacements

Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.