Heavy-duty 3M‚Ñ¢ 346 flatback tape delivers weather-resistant protection for packing lines and carton sealing operations. This 12" x 60 yard roll features 16.7 mil natural tan material with rubber adhesive, removes cleanly for up to 6 months, and resists abrasion on metals and plastics. One case per order‚the reliable choice for supervisors who demand consistent adhesion and dependable dispenser performance.

In stock SKU T950346

12" x 60 yds. 3MÑ¢ 346 Flatback Tape, 16.7 Mil - Case of 1

$797.50/ CASE

Specifications

SKU	T950346
Dimensions	60 yds. × 60 yds. × N/A
Material / strength	16.7 Mil
Sold as	CASE
Brand	3M
Freight class	65
GTIN	841436003346

Shipping & returns

Packrift ships from five US warehouses (Central IL, Northeast PA, South TX, Southeast GA, West CA). The nearest warehouse with stock ships your order. Final shipping cost is shown at checkout based on weight, dimensions, and ZIP.

Oversized or high-volume orders may route via LTL freight; the freight quote is calculated live at checkout.

Shipping policy · Refund policy · Support

Best For

Packing line supervisors managing high-speed carton sealing operations need reliable tape that performs across temperature-controlled and outdoor environments. This 12" x 60 yd. 3M 346 Flatback Tape delivers consistent adhesion on metal and plastic surfaces, making it ideal for mixed-substrate packaging lines that require weather-resistant protection without adhesive residue.

How to choose

The 16.7 mil flatback construction provides abrasion resistance and clean removal for up to 6 months, reducing secondary packaging waste and rework costs. Rubber adhesive formulation ensures immediate tackiness on both smooth and slightly textured surfaces, while the weather-resistant backing maintains seal integrity in temperature ranges of 60°F - 100°F, critical for climate-controlled distribution centers and outdoor staging areas.

Specs at a Glance

Material	16.7 Mil flatback paper with rubber adhesive
Dimensions	12" width x 60 yards length
Color	Tan
Temperature Range	60¬∞F‚Äì100¬∞F optimal application; weather-resistant backing
Recyclable	Yes

Common Use Cases

Case sealing on corrugated cartons with metal reinforcement straps Protecting metal and plastic components during shipment and outdoor storage High-speed packing line applications requiring quick, consistent adhesion Mixed-substrate packaging where tape must bond to both paper and plastic surfaces Climate-controlled and outdoor warehouse environments requiring durable, weather-resistant seals

What You'll Receive

One case containing 1 roll of 3M 346 Flatback Tape (12" x 60 yards)

Shipping & Packaging

Ships as a single case unit. Standard carton packaging protects the tape roll during transit and storage, maintaining optimal adhesive performance upon arrival.

Frequently Asked Questions

Yes. The 12" width and consistent 16.7 mil thickness are compatible with standard industrial tape dispensers. Verify your dispenser's maximum roll width (typically 2" - 3" core diameter) before ordering to ensure straightforward packing line integration.

3M 346 removes cleanly for up to 6 months, making it ideal for cartons stored in warehouses or during extended logistics cycles. Beyond 6 months, adhesive residue may increase depending on environmental conditions.

Application below 60°F or above 100°F is not recommended, as adhesive performance degrades outside this range. For temperature-extreme environments, consider climate-controlled application areas or contact Packrift for alternative products.

This tape bonds exceptionally well to metals, plastics, and paper-based surfaces. Abrasion-resistant flatback construction ensures strong adhesion on slightly textured or corrugated cartons commonly used in industrial packing lines.

Technical Specifications

Temperature Range	60¬∞F‚Äì100¬∞F optimal application; weather-resistant backing
Recyclable	Yes
Color	Tan
Strength / Material	16.7 Mil
Dimensions (Internal)	60 yds. × 60 yds. (L × W × H)

Shipping Information

Outer Carton Dimensions

60 yds. × 60 yds. (L × W × H)

Unit of Measure

CASE

Qty Per Shipping Unit

1 PER CASE

LTL Freight Class

Class 65

Delivery Method

Shown at checkout

Processing and delivery timelines vary by product, warehouse, order size, and destination. Freight-sensitive or oversized items may require LTL delivery or a custom quote before shipment.

Checkout shows available shipping options for the selected SKU and quantity. Use the shipping and refund policy links for current policy details before ordering.

For larger, recurring, freight-sensitive, or mixed-SKU orders, send the SKU or product link, quantity, delivery ZIP code, receiving notes, and timing to support@packrift.com.

ORDER SUPPORT

Product Support

Specs, case quantities, and availability are listed on each product page. For bulk, mixed-SKU, or LTL freight orders, email support@packrift.com with the SKU, quantity, and delivery ZIP.

Use product support for fit, larger or recurring order, return, or order-issue questions. When price and Add to Cart are shown, checkout remains the direct ordering path.

Need a sample, fit check, or substitution review? Contact product support with the SKU, selected option, order quantity, and use case. Support will confirm the available path for that item.

Contact product support

Secure checkout LTL freight available on case/skid orders

Buyer guides

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Use this product as the source 12" x 60 yds. 3MÑ¢ 346 Flatback Tape, 16.7 Mil - Case of 1

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Use this guide when adhesive, dispenser fit, or carton surface matters.