tesa® ACX^plus 74508 Seal Line

0.8 mm heat activatable acrylic foam tape for mounting window seal and water box seal applications

Product Features

High stiffness is especially suitable for mounting water box profiles
Efficient and secure bonding of the heat-activatable layer to seals
PFAS / PFOS free Product

All product features

Product description

tesa® ACX^plus 74508 Seal Line is a deep black acrylic foam tape for permanent mounting of weather strips and water box seals, mainly on automotive glass. It has a heat-activatable adhesive on the non-liner side. The adhesive gets activated by hot air or near-infrared when applying it onto the PP/EPDM, PP, TPV, or TPE seal.

Compared to the conventional process with primer, tesa® ACX^plus 74508 Seal Line ensures a highly secure bond to the rubber profile, enables a higher application speed than using primer, and improves the operational safety during the production process.

Its outstanding cold shock resistance is based on a modified acrylic foam core, which assures a reliable bond even at extreme low temperatures. Being viscoelastic, tesa® ACX^plus 74508 Seal Line absorbs and dissipates dynamic and static loads optimally. This exceptional capability enables tesa® ACX^plus 74508 Seal Line to compensate for extreme physical stress caused by the different thermal elongation of bonded parts in rapidly changing temperatures.

The deep black color provides an enhanced appearance and high design flexibility.

Product details and specifications

Product Features

High stiffness is especially suitable for mounting water box profiles
Efficient and secure bonding of the heat-activatable layer to seals
PFAS / PFOS free Product
Strong bonding of the heat-activatable layer to backing that withstands humidity and heat
Closed cell acrylic foam core for reliable sealing to prevent water penetration
High humidity and UV resistance
Excellent cold shock performance

Application Fields

tesa® ACX^plus 74508 Seal Line can be widely used for mounting window seals, water box seals, sunroof seals, and obstacle detection systems (ODSs).

Adhesive Type	modified acrylic
Backing material	foamed acrylic
Color	deep black
Liner Type	PE/PP protection film
Total thickness	800 µm
Type of adhesive to glass	modified acrylic
Type of adhesive to seal	heat-activatable

Adhesive Type	modified acrylic
Backing material	foamed acrylic
Color	deep black
Liner Type	PE/PP protection film
Total thickness	800 µm
Type of adhesive to glass	modified acrylic
Type of adhesive to seal	heat-activatable

Elongation at break	400 %
Tensile strength	30 N/cm
Humidity resistance	very good
Ageing resistance (UV)	very good

Elongation at break	400 %
Tensile strength	30 N/cm
Humidity resistance	very good
Ageing resistance (UV)	very good

Adhesion to Glass (covered side, after 1 day)	56 N/cm
*Adhesion to Glass (covered side, after 10 days, warm / humid)**	60 N/cm
Adhesion to Steel (covered side, after 3 days)	26 N/cm
Adhesion to TPE (T-Peel, after 1 day)	35 N/cm
*Adhesion to TPE (T-Peel, after 10 days, warm / humid)**	40 N/cm

Adhesion to Glass (covered side, after 1 day)	56 N/cm
*Adhesion to Glass (covered side, after 10 days, warm / humid)**	60 N/cm
Adhesion to Steel (covered side, after 3 days)	26 N/cm
Adhesion to TPE (T-Peel, after 1 day)	35 N/cm
*Adhesion to TPE (T-Peel, after 10 days, warm / humid)**	40 N/cm

PV28 = filmic liner in royal blue, heat sealable, silicone free, works with heat tabbing tape
PV29 = filmic liner in royal blue, siliconized to adhesive side and silicone free to tabbing side, works with both heat and adhesive tabbing tapes
Adhesion to glass: glass is primed with black 1K isocyanate primer. T-Peel test: heat-activatable adhesive to standard TPE. Adhesion data on glass and TPE are not part of the specification. *Warm/humid storage: 240hrs. at 40°C and 100% r.h.

tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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Product comparison

Name of product	tesa® ACXplus 74508 Seal Line	tesa® ACXplus 74512 Seal Line	tesa® ACXplus 74712 Seal Line	tesa® ACXplus 74608 Seal Line	tesa® 52215	tesa® ACXplus 7805 Black Line	tesa® 6308 New Bond	tesa® 6305 New Bond	tesa® 6311 New Bond	tesa® ACXplus 6812 Black Line	tesa® 64802
Total thickness	800 µm	1200 µm	12000 µm	800 µm	150 µm	500 µm	800 µm	500 µm	1100 µm	1200 µm	1600 µm
Adhesive Type	modified acrylic	modified acrylic	acrylic	acrylic	water-based acrylic	modified acrylic	LSE	LSE	LSE	tackified acrylic	acrylic
Backing material	foamed acrylic	foamed acrylic	foamed acrylic	foamed acrylic	non-woven	foamed acrylic	Acrylic foam	Acrylic foam	Acrylic foam	foamed acrylic	PVC foam
Type of adhesive to seal	heat-activatable	heat-activatable	heat-activatable	heat-activatable
Tensile strength	30 N/cm	30 N/cm	19 N/cm	17 N/cm	10 N/cm						10 N/cm
Elongation at break	400 %	400 %	500 %	600 %	5 %	1400 %				600 %	50 %
Color	deep black	deep black	deep black	deep black	translucent	deep black	gray	gray	gray	deep black	black