Name: Acoustical Non-Drying Sealant Compound AND-500
Brand: Coatingsink
SKU: acoustical-non-drying-sealant-base
Availability: InStock

Question 1

How does AND-500 improve sound transmission class (STC) ratings in wall assemblies?

Accepted Answer

AND-500 fills air gaps around electrical boxes, pipe penetrations, and perimeter joints — paths that short-circuit mass-law attenuation. Applied at 3–6 mm thickness, it maintains full contact with both surfaces indefinitely without shrinkage, adding ≥ 5 STC points in tested assemblies per ASTM E90.

Question 2

Will AND-500 harden or lose tack over time?

Accepted Answer

No. The polyisobutylene base contains no reactive cure sites and remains permanently plastic. In accelerated aging at 70°C for 168 h, tack and elongation are unchanged, making it suitable for joints that must remain accessible or that cycle thermally between −40°C and +80°C.

Question 3

Is AND-500 compatible with PVC conduit and gypsum board facers?

Accepted Answer

Yes. AND-500 shows no plasticiser migration into PVC or HDPE substrates and does not stain standard gypsum board facer paper. No primer is required on clean dry surfaces; dusty concrete should be vacuumed and any standing water removed before application.

Consistency	Paste / putty, non-slump
Base Polymer	Polyisobutylene / butyl rubber blend
Solids Content	~100% (solvent-free)
Density (25°C)	1.50 g/cm³
Service Temp Range	−40°C to +80°C

Acoustical Non-Drying Sealant Compound AND-500

Specifications

FAQ

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