New Pig PLR412 Drain Cover — 12" Round, Fits Drains Up to 6" Dia

New Pig PLR412 Drain Cover overview

The New Pig PLR412 Drain Cover is a 12-inch-diameter round cover, 0.335 inches thick, built to seal round drains up to 6 inches in diameter. The top layer is Elvaloy vinyl — DuPont's material engineered for lasting flexibility plus resistance to chemicals, UV, and infrared exposure — over a tacky urethane bottom layer that conforms to uneven pavement or concrete to form a tight seal. It's rated for use from 0°F to 160°F and supports compliance efforts under 40 CFR 112.7 (SPCC) and 40 CFR 122.26 (NPDES stormwater). See our best spill kits guide, the spill kit size calculator, and the spill control collection for the rest of the response lineup.

One correction worth flagging directly: this product has at times been listed — including on our own site — with an incorrect "60 x 36 in" size. That figure belongs to a different, much larger New Pig rectangular drain-cover product and does not apply to the PLR412, which is confirmed by the manufacturer as a single 12-inch round configuration. If your drain is larger, non-round, or you need a different footprint, check New Pig's broader DrainBlocker lineup rather than assuming this SKU covers it. For containing a larger area around a drum or work zone, see the New Pig PLR230 spill barrier dike instead, and pair a covered drain with the acid-neutralizing New Pig KIT318 if the spill risk includes acids.

Where it fits

It's built for facilities, loading docks, fueling areas, and construction or industrial sites with round storm drains that need quick, temporary protection during a spill, washdown, or heavy rain event — anywhere an SPCC plan or stormwater permit calls for drain protection as part of your spill-prevention measures. It's not a substitute for absorbing or neutralizing an actual spill, and it's sized for round drains up to 6 inches, not larger or non-round openings. Pair it with the right PPE — our chemical-resistant gloves and chemical-resistant nitrile gloves guides cover hand protection, and see OSHA 1910.132 PPE requirements for the general ground rules. Facilities near wastewater or treatment operations may also want our respirator guide for wastewater workers.

Pros & cons

Specifications

Related guides

• Best spill kits
• Best chemical-resistant gloves
• Best chemical-resistant nitrile gloves
• OSHA 1910.132 PPE requirements
• Best respirator for wastewater workers

Related resources

• New Pig PLR230 spill barrier dike
• New Pig KIT318 acid-neutralizing spill kit
• New Pig KIT21 universal spill kit
• Shop spill control

Frequently asked questions

What size is the New Pig PLR412 drain cover?

It's a round cover with a 12-inch external diameter and 0.335-inch thickness, sized to fit round drains up to 6 inches in diameter. Note: some listings for this exact product — including, at times, our own — have incorrectly stated a "60 x 36 in" size; that figure belongs to a different, much larger New Pig rectangular drain-cover product line and is not correct for the PLR412.

What is the drain cover made of?

A two-layer construction: the top is Elvaloy vinyl, engineered by DuPont for lasting flexibility plus resistance to chemicals, UV, and infrared light; the bottom is a tacky urethane layer that conforms to uneven pavement or concrete to form a tight seal around the drain opening.

How does the seal actually work?

The tacky urethane underside grips and molds to the surface around the drain, blocking liquid from entering while the vinyl top resists tearing from foot or vehicle traffic. It's a temporary seal, not a permanent drain plug — remove it once the spill or runoff risk has passed so the drain can function normally.

What drain sizes does it fit?

Round drains up to 6 inches in diameter. For larger or non-round (square/rectangular) drains, New Pig makes other DrainBlocker covers sized differently — check your drain's exact shape and diameter before ordering, since a mismatched cover won't seal properly.

What compliance requirements does it support?

It's referenced against 40 CFR 112.7 (SPCC — Spill Prevention, Control, and Countermeasure planning) and 40 CFR 122.26 (NPDES stormwater discharge permitting). Using the cover supports these compliance efforts; it's not an EPA-certified product, since the EPA doesn't run a certification program for individual commercial items like this.

What temperature range can it handle?

0°F to 160°F, per the manufacturer's published operating range — suitable for most outdoor storm-drain and facility applications across seasons.

Can it handle vehicle or foot traffic while in place?

The vinyl top layer is built to resist stretching, ripping, and tearing, which supports incidental foot and light traffic, but treat it as a temporary spill-response and washdown seal rather than a permanent drive-over cover for heavy or repeated vehicle traffic.

When would I use a drain cover instead of a spill kit?

A drain cover blocks a specific drain opening to stop a spill or contaminated runoff from entering the storm system — it's a containment barrier, not an absorbent. Pair it with a spill kit for actually soaking up and neutralizing the spilled liquid; see our best spill kits guide for that side of the response.

How do I install and remove it?

Lay the cover over the drain opening so the urethane underside makes full contact with the surrounding surface, pressing down around the edges to set the seal. Peel it up carefully when the spill risk has passed, and clean off any debris before storing it for reuse.

Is it reusable?

Yes — the Elvaloy vinyl top and urethane bottom are designed for repeated use and washdowns rather than single-use, so it can be cleaned, dried, and redeployed for future spill events or planned runoff protection.

What color is it?

Yellow, per the manufacturer's published specification — a high-visibility color that helps mark the covered drain for other workers and vehicles nearby.

What PPE should I wear when deploying it during a spill?

Match your gloves and eye protection to the liquid you're containing — chemical-resistant gloves for anything beyond plain water, and eye protection if there's any splash risk. Deploying the cover is usually low-hazard, but the spill itself may not be, so check the safety data sheet for what you're actually containing.

Reviewed by Steven Eaton, WC Safety. Specifications reflect New Pig's official published data for the PLR412: a 12-inch round drain cover for drains up to 6 inches in diameter — not the "60 x 36 in" size that has appeared in some listings for this product.