News

Quality Control Standards for Waterproof Dry Bag Production

Sealock produces waterproof dry bags for OEM and wholesale buyers under a documented three-stage quality control system. Quality control on a waterproof product is different from general consumer goods inspection: a bag can pass a visual check perfectly and still fail the one thing it was bought to ......

Dry Bag Manufacturing Process: From Material Cutting to RF Welding

Sealock manufactures dry bags for OEM and wholesale buyers using 27.12 MHz radio frequency welding, and the process is worth understanding because it explains why two bags built from identical fabric perform completely differently. A dry bag's waterproofing is not bought with the material — it is cr......

Dry Bag MOQ Explained: Minimum Order Quantities for OEM Projects

Sealock is a dry bag manufacturer running OEM and wholesale projects at an MOQ of 300 pieces, and the minimum order quantity is the number that surprises the most first-time buyers. MOQ is not a barrier a factory invents to exclude small brands — it is a calculation tied to material sourcing and pro......

Heavy Duty Dry Bags for Industrial and Outdoor Applications

Sealock manufactures heavy duty dry bags for industrial buyers, marine operators, and outdoor brands sourcing gear that has to survive commercial use rather than a weekend. "Heavy duty" is the most abused phrase in the category — it appears on bags built from the same light fabric as everything else......

Roll Top Dry Bags: Why They Dominate Waterproof Storage Products

Sealock manufactures roll top dry bags for outdoor brands and wholesale buyers, and the roll-top's dominance of waterproof storage is not habit — it is the only closure that seals, adjusts volume, and floats at once, with no moving parts to wear out. This is how the mechanism actually works, how to ......

Wholesale Dry Bags: Bulk Purchasing Guide for Importers

Sealock supplies wholesale dry bags in bulk to importers, distributors, and retail buyers, shipping FOB from factories in China and Vietnam. A bulk dry bag order is won or lost on the terms, not the unit price: the Incoterm, the payment schedule, the inspection trigger, and the landed cost model dec......

TPU Dry Bags: Material Advantages for Premium Waterproof Products

Sealock is a TPU dry bag manufacturer supplying premium waterproof bags to outdoor brands and importers sourcing at the material level. For a procurement team, the choice between TPU, PVC, and PU is not a detail — it decides weight, cold-weather behavior, service life, hand-feel, and compliance, and......

PVC Dry Bags: Cost, Performance and Manufacturing Applications

Sealock is a PVC dry bag manufacturer supplying rugged, cost-effective waterproof bags to outdoor brands and importers sourcing at the material level. PVC is the workhorse of the dry bag category — it is what most reliable, hard-wearing, budget-to-mid waterproof bags are built from — and for a procu......

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