1 of 2 ? scotch ? varnished cambric tapes 2510 and 2520 product description scotch ? varnished cambric tapes are made from straight - cut woven cotton cambric fabric. the fabric is oil primed and coated with a high - grade yellow electrical insulating varnish. varnished cambric tapes are flexible, electrically insulating and moisture resistant with a smooth finish. scotch ? varnished cambric tape 2510 is ye llow, non - adhesive coated and 7 mils thick. scotch ? varnished cambric tape 2520 is yellow with a pressure - sensitive adhesive and 8 mils thick. they are designed to perform continuously in temperatures up to 105c (220f) with excellent resistance to abrasion, puncture and cut - through. the adhesive on scotch ? varnished cambric tape 2520 holds the tape in position after application. ? excellent dielectric strength. ? electrical properties are stable up to 105c. ? high puncture and cut - through resistance. ? varnish ed cambric tapes are rated for class a (105c). ? non - corrosive adhesive on scotch ? varnished cambric tape 2520 . adhesive holds film in position until the jacket is applied. data sheet june 201 6 applications for insulating joints requiring rapid and clean re - entry such as motor lead and service drop connections, heavy split - bolts in raceways and bus bar insulating. use in areas where mechanical protection and puncture resistance is critical. note: scotch varnished cambric tapes 2510 and 2520 should not be used as primary insulation for splicing and terminating pilc cable contact you r 3m electrical markets division representative for product recommendation for splicing and terminating pilc cable spe c ifications scotch varnished cambric tapes shall be based on straight - cut woven cotton cambric fabric. it shall be coated to a specified thickness, with high grade yellow electrical insulating varnish producing a visibly smooth surface. the surface shall be free from peeling, blisters, contamination and other imperfections. finished product thickness shall be controlled to plus or minus 1 mil. tapes must unwind freely (except adhesive ? backed) with no binding between tape layers. yellow, dry - finish varnished cambric tape shall be wax - dipped to preserve electrical properties. installation techniques apply scotch varnished cambric tape 2510 and 2520 in half - lapped layers with sufficient tension to conform to the connection surface. apply a minimum of two half - lapped layers for mechanical protection. jacket all varnished cambric applications with scotch r ubber and v inyl s plicing t apes to provide a contamination and moisture seal.
scotch ? varnished cambric tapes 2510 and 2520 2 of 2 3m and scotch are trademarks of 3m company. typical physical and electrical properties not for specifications. values are typical, not to be considered minimum or maximum. properties measured at room temperature 73f (23c) unless otherwise stated. physical properties (test method) 2510 2520 color yellow yellow surface finish dry dry with adhesive t hickness (astm d 374 ) 7 mils 8 mils tensile strength (astm d 295 ) 50 ils./in. 50 ils./in. adhesion to steel (astm d 1000 ) - 13 oz./in. adhesion to backing (astm d 1000 ) - 8 oz./in. thermal stability class a class a solvent resistance excellent excellent oil resistance excellent excellent electrical properties (test method) 2510 2510 dielectric strength (astm d 295) 800 v/mil 800 v/mil shelf life & storage scotch ? varnished cambric tapes 2510 and 2520 have a 5 - year shelf life (from date of manufacture) when stored under the following recommended storage conditions. store behind present stock in a clean dry place at a temperature of 70f and 40% to 50% relative humidity. proper stock rotation is recommended. availability scotch ? varnished cambric tapes 2510 and 2520 are available from your local 3m authorized distributor . a vailable from 3m.com/electrical [where to buy] or call 1.800.245.3573. important notice all statements, technical information, and recommendations related to 3m?s products are based on information believed to be reliable, but the accuracy or completeness is not guaranteed. before using this product, you must evaluate it and determine i f it is suitable for your intended application. you assume all risks and liability associated with such use. any statements relate d to the product, which are not contained in 3m?s current publications, or any contrary statements contained on your purchase orde r, shall have no force or effect unless expressly agreed upon, in writing, by an authorized officer of 3m. warranty; limited remedy; limited liability this product will be free from defects in material and manufacture at the time of purchase. 3m makes no other warranties including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose . if this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3m?s option, to replace or repair the 3m product or refund the purchase price of the 3m product . except where prohibited by law, 3m will not be liab le for any direct, indirect, special, incidental or consequential loss or damage arising from this 3m product, regardless of the legal theory asserted. ? ? electrical markets division 6801 river place blvd. austin, tx 78726 - 9000 800.245.3573 f ax: 800.245.0329 www.3m.com/electrical please recycle ? 3m 201 6 all rights reserved 78- 8124- 4831-0 rev d
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