What is the expiration date of these? They are difficult to use if beyond expire date.

I would not use this beyond its expiration date. Smarter to get fresh caulk as old caulk loses adhesion. This stuff is Soooo much better than anything else. But it needs to sit for 6-7 days before exposure to water in the bath or kitchen or paint anywhere else.

After I have filled the cracks can I apply more sikaflex on top of the existing sikaflex...Will it bond to itself?

Yes and no. A cured bond break will exist, but if you need to increase the fill of the caulkable gap, no harm will be created. You can reactive the existing caulk with a little acetone. BUT if it's a vertical fill, don't do it! You'll have a mess in your hands and everywhere else....

I need to seal stainless steel to concrete in an underwater pool setting with chlorine, is this the stuff to use?

I haven't had that kind of use for it, but this caulk seems very durable, and sticks pretty aggressively to everything.

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SIKA Sikaflex-1a Sealant, 10.1 fl oz, White – Premium Adhesive for Small Joints, Weather & Age Resistant, High Elasticity, Ideal for Windows, Door Frames & More

SIKA Sikaflex-1a Sealant, 10.1 fl oz, White – Premium Adhesive for Small Joints, Weather & Age Resistant, High Elasticity, Ideal for Windows, Door Frames & More

Product ID: 18784330

Details

Brand
SIKA
Color
White
Full Cure Time
5 Days
Item Weight
16 ounces
Liquid Volume
10.1 Fluid

🌦️weather & age resistant

🛠️0.5 in max joint depth

🧘‍♂️±35% joint movement elasticity

C$2015

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal smart, last longer — the pro’s choice for flawless joints!

FLEXIBLE PERFORMANCE - Accommodates ±35% joint movement to prevent cracks and tears under stress.
CERTIFIED RELIABILITY - Meets ASTM C920 and NSF/ANSI 61 standards for trusted, safe use in potable water applications.
FAST CURING EFFICIENCY - Tack-free in just 3 hours, speeding up your project timelines without compromising quality.
WEATHERPROOF DURABILITY - Urethane formula resists harsh weather and aging, ensuring long-lasting protection.
PRECISION FOR SMALL JOINTS - Perfectly seals joints up to 1/2 inch for flawless finishes on windows and door frames.

SIKA Sikaflex-1a is a premium white polyurethane sealant designed for small joints up to 0.5 inches. It offers superior weather and age resistance, high elasticity accommodating ±35% joint movement, and fast curing with a tack-free time of 3 hours. Certified to meet ASTM C920 and NSF/ANSI 61 standards, it’s ideal for windows, door frames, and other critical sealing applications requiring durability and flexibility.

Specifications

ASIN	B00461KMIY
Best Sellers Rank	#6,147 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Polyurethane Adhesives #45 in Urethane Adhesives
Brand	SIKA
Brand Name	SIKA
Color	White
Customer Reviews	4.5 out of 5 stars 726 Reviews
Full Cure Time	5 Days
Included Components	Cartridge
Initial Hardening Time	3 Hours
Item Form	Fl
Item Type Name	Adhesive
Item Weight	1 Pounds
Liquid Volume	10.1 Fluid Ounces
Manufacturer	Sika USA
Material Type	Polyurethane
Maximum Gap Fill	0.5 Inches
Model	91017
Number of Items	1
Part Number	91017
Surface Recommendation	Concrete
Tensile Strength	175 Pounds Per Square Inch
UPC	033886002752
Unit Count	1.0 Count
Water Resistance Level	Waterproof

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C$2015

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

Secure transaction

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