FAQs-Misc

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1. General Business

2. Safety/Environmental

3. Manufacturing Capabilities

4. Miscellaneous

4a: I currently apply heat shrinkable tubing over a cylindrical substrate before using a flow-through oven to shrink it down; are there any cost-effective alternatives for me to consider?
4b: What if I want to use additional adhesive on my adhesive-lined heat shrink tubing, or want to use adhesive with PVC heat shrink tubing?
4c: Can you explain Grayline's part numbering system?

 



4a: I currently apply heat shrinkable tubing over a cylindrical substrate before using a flow-through oven to shrink it down; are there any cost-effective alternatives for me to consider?

There might be, depending upon your application. Grayline has developed a process by which a PVC covering can be applied directly to a substrate. For some customers, this process has replaced the use of heat shrinkable tubing and the necessary downstream equipment and labor, resulting in a significant cost savings. Please contact Grayline to discuss your specific application.
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4b: What if I want to use additional adhesive on my adhesive-lined heat shrink tubing, or want to use adhesive with PVC heat shrink tubing?

Grayline MELT-WRAP is a polyamide hot-melt adhesive that is ideal for these situations.

Supplied in the form of a flat strip measuring 2: wide and 0.012" thick (50mm wide and 0.3mm thick, MELT-WRAP can easily be cut to the required size using a scissors or automated cutting equipment. The adhesive strip is then wrapped around or between the wires or other substrate to be sealed, prior to installing a length of heat shrinkable tubing (either PVC or polyolefin) over the wrap. Application of heat causes the tubing to shrink and the adhesive to melt and flow, forming an environmental seal. The adhesive readily bonds to PVC, polyolefin, and EVA, as well as bare copper and aluminum.

For more information and photos demonstrating the application of MELT-WRAP, click here
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4c: Can you explain Grayline's part numbering system?

Each of Grayline's tubing products is assigned two unique part numbers. Both of these part numbers are printed on Grayline's standard product labels. The standard part number is between 16 and 22 digits. There is also an alternate part number that is only 4 digits.

Standard Part Number

A1111-222-333-444-555M-B

Grayline's standard part number has the format shown above. Details of each element are as follows:

AThe first letter is a product type code.
1111Tubing ID - either nominal or trade size measured in thousands of an inch (four digits, no decimal).
222Nominal tubing wall thickness in thousands of an inch (three digits, no decimal). For heat shrink tubing, this is the recovered wall thickness. This number is optional for braided and polyolefin tubing.
333Material type – three digit number, see table below.
444Color – three digit number, see table below.
555Form code - variable three digit number that distinguishes the part from others with the same ID, wall, material, type and color.
MOptional Metric designation. If “M” is present, product is sold in meters.
BOptional designation.
P = Printed
A = Tube Assembly
F = Heat Formed
R = Profile
B = Bonded
Mtl CodeProduct NameOld Product Name
100105C Clear-
101105C AF Clear-
107105 HD-
108105 HD UV-
1109848-
117GP65-PVC 65A
118GP75-PVC 1975
119GP70-PVC 1970
120GP80-AF-PVC 3425
122MD65-PVC-
123CX65-PVC 65-CX
125FL75-PVC FL-250
127SP-100-
128GP75-AF-PVC-
130631-
131CX85-PVC 85-CX
1357444 opaque-
1377444 Clear-
138FB80-NP-PVC-
139MD80-NP-PVC NP80
140GP80-PVC 1980
141FB75-PVC 75-NT
143FB85-PVC 85-NT
146FB70-PVC-
147105C HD UV Clear-
148105 HD UV-
149MD75-PVC-
150JIS-85-
154MD70-GS-PVC GS70
156MD70-PVC-
157GP85-UV-PVC 195-85A
159MD82C-PVC NT82C
16073A-
1709848 layflat-
175MD80-GS-PVC GS80
175MD80-RO-PVC-
180105C opaque-
181105C AF opaque-
182105C AF+UV opaque-
184GP75-HT-PVC 75-HRT
186F2255-PVC-
300HS-105C-
301HS-105C AF-
310HS-105C UV-
311HS-105C UV+A/F-
315SP105 HS UV-
320NT-82C-
405GP125-
410GP50D-PO EXL125
415HF100-
420BR-125-
425GP80-PO-
500SL125-
510SL2535-
510SL2535CL-
520SL3X-
525AL2X-
526AL3X-
527AL4X-
529SMS-
530PVDF-
531Kynar®-
532ALAS-125-
533DW4X-
540BD275-
545ML251-
547NHS-
550MF392-
554HW-
555HWT-
556MWT-
565Melt Wrap-
569FB75-HC-PP-
570TI-
572GP63D-HYT-
5731185A-TPU-
575GP80M-NY66 Nylon 6/6
576FL70D-NY6-
577FL73D-NY12 Nylon 12
579GP50D-LDPE-
580GP55D-LDPE LDPE
581FB50D-LDPE-
582GP55D-MDPE MDPE
583GP85-TPV-
584GP90-TPV-
585GP90-PE Flex-PE
586Everprene-60-
587FB60-TPV 59A-TPV
588GP70-TPV69A-TPV
589GP60-UV-TPV-
590MD90-PE-
591GP80-TPU TPU-82A
592GP85-TPU TPU-88A
593FB85-TPU-
594GP85-ES-TPU-
595MD85-TPU-
596MD65-TPV-
597GP50D-TPU-
598MD75-TPE-
599MD65-TPE-
700AC-C1-
703AC-B-
705AC-A-
706AC-C2-
709AS-1 SFT-
710AS-1-
712AS-2-
713SR-C1-
714SR-B-
715SR-A-
716EXGP-
735HT-1-
736HT-2-
740VC-C1-
742VC-B-
745VC-A-
746TW-
747EXFR-
800FB80-BR-PVC (Thin Wall) BR-80
801FB80-BR-PVC (Std Wall)-
802FB80-BR-PVC (Hvy Wall)-
803FB73-SR-PVC SR-70
804FB80-HY-PVC-
805Spiral-Hose (LD)-
806Spiral-Hose (SD)-
807Spiral-Hose (HD Food)-
808Spiral-Hose (HD Ind.)-
810FB85-BR-TPU TPU-BR85
812FB68-PVC-
815FB50D-LLDPE LLDPE
816FB80-PE-EVA-
820FB75R-PP PP-75R
825GP72D-NY12-
826GP63D-NY12-
830FB50-SIL Silicone
831FB70-BR-SIL SIL-BR
832FB70-SR-SIL SIL-WR
833MD50-PL-SIL SIL-PC-MED
834MD60-PR-SIL SIL-MED
835MD70-BR-SIL SIL-BR-MED
840PTFE-
841PTFE-AWG-
842PTFE-CON-
843PTFE-HOSE-
844FEP-
845FEP-COR-
846FEP (coiled)FEP-COIL
847PFA-
850FL60-VTN Viton-60
851FL75-VTN Viton-75
855MD35-LTX Latex
Color CodeColor
100Clear
150Natural
200White
300Yellow
350Orange
400Red
500Gray
600Green
680Purple
700Blue
701Blue Tint
800Brown
900Black

Alternate Part Number

The alternate part number is a randomly assigned four digit number consisting of two alphabetic characters followed by 2 numeric digits (e.g. KW84). This number was added to allow for easier picking of products for shipping.
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phone Grayline at 1-800-669-7986