Uline S-1631 Equivalent: 2.5x18" White Mailing Tubes (34/case)
Model-to-size mapping verified against Uline’s published catalog listings on August 5, 2026; the Packrift price below is our live catalog price.
Uline model S-1631 is a 2.5x18" white mailing tube per Uline’s published listings. The Packrift exact-size equivalent — same inside diameter and usable length, same construction class — is 2.5x18 White Spiral Wound Mailing Tubes w/ Caps - Case of 34, priced at $58.45 per 34/case ($1.72 per tube) today.
| Size (inside diameter x usable length) | Construction | Pack | Price today | Per tube | |
|---|---|---|---|---|---|
| Uline S-1631 | 2.5x18" | .060" wall, spiral wound | see your invoice | see your invoice | — |
| Packrift equivalent | 2.5x18" | .060" wall, spiral wound | 34 | $58.45 | $1.72/tube |
Reordering a different model? The cross-reference covers 752 verified models across boxes, mailers, and tubes.
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Frequently asked questions
Is this the same tube as Uline S-1631?
It matches S-1631’s published dimensions (2.5x18") in the same construction class, so it protects and ships the same. It is not manufactured by or affiliated with Uline — if your spec sheet calls out a certification, confirm it on the product page before switching.
What if my Uline model isn’t listed here?
The cross-reference currently covers 752 verified models across boxes, bubble mailers, and mailing tubes. Enter yours in the lookup tool, or request a quote with the model number and we’ll match it by spec.
Uline is a registered trademark of Uline, Inc. Packrift is not affiliated with Uline; model numbers are referenced for size-compatibility comparison only.