Airtight Waterproof Zipper Selection Guide | YILON 翼隆实业

Selection comes down to four things: waterproof rating (IPX6-IPX8), size (#5/#8/#10), material (TPU/PEVA/silicone/nylon), and customization (length/width/color/slider). Identify your application first, then match sealing needs from high to low to narrow down the model.

Step 1: Determine the waterproof rating

Rating	Protection	Typical uses	YILON products
IPX6	Powerful water jets	Rainwear, dry bags, standard waterproof wear	PEVA / TPU waterproof zippers
IPX7	Temporary immersion (1m, 30 min)	Wading gear, snorkeling, water sports	#5/#8 TPU watertight zippers
IPX8	Continuous immersion (>1m, by agreement)	Drysuits, deep-sea workwear, military/medical pressure sealing	#8/#10 TPU airtight zippers

Step 2: Choose the size

Size	Approx. chain width	Applications
#5	~5mm	Lightweight garments, dry bags, general outdoor gear
#8	~8mm	Protective suits, drysuits, inflatable products
#10	~10mm	Heavy industry, military, rapid roller doors, high-pressure sealing

Step 3: Choose the material

TPU: best all-round performance — elasticity, abrasion and hydrolysis resistance, -30 to 70°C range, first choice for airtight sealing.
PEVA: lightweight and low-cost, for everyday waterproofing.
Silicone rubber: highly flexible and weather-resistant, used for drysuit envelopes.
Nylon: soft, good for watertight uses, but less effective than one-piece TPU for high-pressure airtight sealing.

Step 4: Confirm the 12 customization parameters

Application, length range, opening length, size/tape width, color, slider style, end structure, material, waterproof rating, oil-resistance requirement, test conditions, and quantity.

YILON: We support #5/#8/#10, chain width 10-70mm, length 5cm-100m, and full color customization; provide IPX6-IPX8 test reports, 60kPa sealing strength, 3000+ open/close cycles; full sample-to-production support.

Contact YILON for Guidance