Robbins Envelopes – Your CMT Advantage

 

Robbins has the world’s most comprehensive range of outside, inside and OTR envelope shapes and sizes.

Our unique Compression Molding Technology (CMT) uses proprietary rubber compounds, extruded into slugs, then molded for curing. CMT eliminates splicing the envelope, increasing durability, flexibility, and production life.

Robbins Accu-Fit CMT™ envelopes improve retread appearance by reducing temperature variations and creating a perfect vacuum in the curing chamber to help ensure a strong bond of the tread to the tire.

Accu-Fit II / Inner-Lope® envelopes mold to the tire body, delivering uniform curing pressure and heat on the tread and tire body, including the bead area, for maximum bonding adhesion and less tread distortion.

Hand Built Inside Envelopes
Industrial Envelopes
OTR Outside Envelopes
Envelope Care & Use
ACCU-FIT CMT
SIZE O.D. B. to B.
Inch MM Inch MM
2710-21 27 686 21 533
2711-20 27 686 20 508
2713-18 27 686 18 457
2715-16 27 686 16 406
2716-15 27 686 15 381
2910-25 29 737 25 635
2911-24 29 737 24 610
2913-22 29 737 22 559
2915-20 29 737 20 508
2916-19 29 737 19 483
3111-24 31 787 24 610
3113-22 31 787 22 559
3115-21 31 787 21 533
3117-18 31 787 18 457
3118-17 31 787 17 432
3119-16 31 787 16 406
3211-26 32 813 26 660
3213-24 32 813 24 610
3216-22 32 813 22 559
3218-19 32 813 19 483
3511-29 35 889 29 737
3513-27 35 889 27 686
3515-25 35 889 25 635
3517-23 35 889 23 584
3518-22 35 889 22 559
3519-21 35 889 21 533
3521-19 35 889 19 483
3812-31 38 965 31 787
3814-29 38 965 29 737
3816-28 38 965 28 711
3818-26 38 965 26 660
3820-24 38 965 24 610
3822-23 38 965 23 584
4012-34 40 1016 34 864
4014-32 40 1016 32 813
4016-29 40 1016 29 737
4018-27 40 1016 27 686
4020-26 40 1016 26 660
4022-25 40 1016 25 635
4213-37 42 1067 37 940
4215-35 42 1067 35 889
4217-34 42 1067 34 864
4214-32 42 1067 32 813
4218-30 42 1067 30 762
4219-30 42 1067 30 762
4220-28 42 1067 28 711
4221-29 42 1067 29 737
4222-26 42 1067 26 660
4223-27 42 1067 27 686
4224-23 42 1067 23 584
4413-39 44 1118 39 991
4415-38 44 1118 38 965
4416-35 44 1118 35 889
4417-36 44 1118 36 914
4418-34 44 1118 34 864
4419-33 44 1118 33 838
4420-31 44 1118 31 787
4421-32 44 1118 32 813
4422-29 44 1118 29 737
4423-30 44 1118 30 762
4513-44 45 1143 44 1118
4515-41 45 1143 41 1041
4516-40 45 1143 40 1016
4518-38 45 1143 38 965
4520-36 45 1143 36 914
4522-34 45 1143 34 864
4814-44 48 1219 44 1118

OTR OUTSIDE ENVELOPES
ITEM # SIZE
89135 91 X 35 OTR Outside Envelope
89028 90 x 28 OTR Outside Envelope
89728 97 x 28 OTR Outside Envelope
810028 100 x 28 OTR Outside Envelope
810040 100 x 40 OTR Outside Envelope
810630 106 x 30 OTR Outside Envelope
810635 106 x 35 OTR Outside Envelope
810640 106 x 40 OTR Outside Envelope
810920 109 x 20 OTR Outside Envelope
810924 109 x 24 OTR Outside Envelope
810930 109 x 30 OTR Outside Envelope
811430 114 x 30 OTR Outside Envelope
811435 114 x 35 OTR Outside Envelope
811930 119 x 30 OTR Outside Envelope
812430 124 x 30 OTR Outside Envelope
8206 20 x 6 OTR Outside Envelope
8208 20 x 8 OTR Outside Envelope
82156 21.5 x 6 OTR Outside Envelope
821508 21.50 X 8 OTR Outside Envelope
823121 23.1 x 21 OTR Outside Envelope
82458 24.5 X 8 OTR Outside Envelope
82510 25 X 10 OTR Outside Envelope
826529 26.5 x 29 OTR Outside Envelope
82712 27 X 12 OTR Outside Envelope
827511 27.5 x 11 OTR Outside Envelope
828513 28.5 x 13 OTR
83614 36 X 14 OTR Outside Envelope
83019 39 X 19 OTR Outside Envelope
852518 52.5 x 18 OTR Outside Envelope
855510 55.5 X 10 OTR Outside Envelope
855514 55.5 x 14 OTR Outside Envelope
855515 55.5 x 15 OTR Outside Envelope
855517 55.5 x 17 OTR Outside Envelope
85613 56 x 13 OTR Outside Envelope
85813 58 x 13 OTR Outside Envelope
85824 58 x 24 OTR Outside Envelope
85717 58 X 17 OTR Outside Envelope
85830 58 x 30 OTR Outside Envelope
85926 59 x 26 OTR Outside Envelope
86015 60 x 15 OTR Outside Envelope
86020 60 x 20 OTR Outside Envelope
86130 61 x 30 OTR Outside Envelope
86310 63 x 10 OTR Outside Envelope
86312 63 x 12 OTR Outside Envelope
86313 63 x 13 OTR Outside Envelope
86317 63 x 17 OTR Outside Envelope
86319 63 x 19 OTR Outside Envelope
86327 63 x 27 OTR Outside Envelope
86512 65 x 12 OTR Outside Envelope
86515 65 x 15 OTR Outside Envelope
86520 65 x 20 OTR Outside Envelope
86815 68 x 15 OTR Outside Envelope
87220 72 x 20 OTR Outside Envelope
87227 72 x 27 OTR Outside Envelope
87430 74 x 30 OTR Outside Envelope
87915 79 x 15 OTR Outside Envelope
87920 79 x 20 OTR Outside Envelope
88120 81 x 20 OTR Outside Envelope
88530 85 x 30 OTR Outside Envelope
88540 85 x 40 OTR Outside Envelope
88628 86 x 28 OTR Outside Envelope
89120 91 x 20 OTR Outside Envelope
89125 91 x 25 OTR Outside Envelope
89130 91 x 30 OTR Outside Envelope
89540 95 x 40 OTR Outside Envelope
89634 96 x 34 OTR Outside Envelope
89720 97 x 20 OTR Outside Envelope
89725 97 x 25 OTR Outside Envelope


ACCU-FIT II / INNER-LOPE® INSIDE ENVELOPES
SIZE O.D. WIDTH
  Inch MM Inch MM
44X10-24.5 44 1118 10 254
40X8-24.5 40 1016 8 203
38X8-24.5 38 965 8 203
44X12-22.5 44 1118 12 305
42X10-22.5 42 1067 10 254
40X8-22.5 40 1016 8 203
38X8-22.5 38 965 8 203
35X8-22.5 35 889 8 203
42X10-20 42 1067 10 254
40X8-20 40 1016 8 203
38X8-20 38 965 8 203
35X8-20 35 889 8 203
32X8-20 32 813 8 203
42X10-19.5 42 1067 10 254
40X8-19.5 40 1016 8 203
38X8-19.5 38 965 8 203
35X8-19.5 35 889 8 203
32X8-19.5L 32 813 8 203
32x8-19.5R 32 813 8 203
29X7-19.5 29 737 7 178
35X8-17.5 35 889 8 203
32X8-17.5 32 813 8 203
29X7-17.5 29 737 7 178
27X5-17.5 27 686 5 127
32X8-16 32 813 8 203
29X7-16 29 737 7 178
27X5-16 27 686 5 127

 

INDUSTRIAL ENVELOPES
SIZE O.D. B. to B.
  Inch MM Inch MM
3814-29 38 965 29 737
3213-24 32 813 24 610
2916-19 29 737 19 483
2711-20 27 686 20 508
252-15 25 635 15 381
240-16 24 610 16 406
230-18 23 584 18 457

 

OTR INSIDE ENVELOPES
ITEM # SIZE
810175 10 x 17.5 OTR Inside Envelope
810195 10 x 19.5 OTR Inside Envelope
8100015 10.00 x 15 OTR Inside Envelope
810225 10.00 x 22.5 OTR Inside Envelope
8100020 10.00 x 20 OTR Inside Envelope
811195 11.00 x 19.5 OTR Inside Envelope
8110020 11.00 x 20 OTR Inside Envelope
8110022 11.00 x 22 OTR Inside Envelope
811225 11.00 x 22.5 OTR Inside Envelope
812225 12 x 22.5 OTR Inside Envelope
8120020 12.00 x 20 Hand-Built Envelope
813225 13.00 x 22.5 OTR Inside Envelope
8130024 13.00 x 24 OTR Inside Envelope
8140020 14.00 x 20 OTR Inside Envelope
8140024 14.00 x 24 OTR Inside Envelope
8140025 14.00 x 25 OTR Inside Envelope
815225 15.00 x 22.5 OTR Inside Envelope
815502500 15.5 X 25 OTR Inside Envelope
8160020 16.00 x 20 OTR Inside Envelope
8160025 16.00 x 25 OTR Inside Envelope
8165225 16.5 x 22.5 OTR Inside Envelope
8175025 17.5 x 25 OTR Inside Envelope
8180024 18.00 x 24 OTR Inside Envelope
8180025 18.00 x 25 OTR Inside Envelope
8180033 18.00 x 33 OTR Inside Envelope
820525 20.5 x 25 OTR Inside Envelope
8210025 21.00 x 25 OTR Inside Envelope
8210035 21.00 X 35 OTR Inside Envelope
823121 23.1 x 21 OTR Inside Envelope
8240035 24.00 x 35 OTR Inside Envelope
826529 26.5 x 25 OTR Inside Envelope
8270049 27.00 X 49 OTR Inside Envelope
829525 29.5 x 25 OTR Inside Envelope
829529 29.5 x 29 OTR Inside Envelope
8356533 33.5 x 33 OTR Inside Envelope
840012 4.00 x 12 OTR Inside Envelope
85008 5.00 x 8 OTR Inside Envelope
8600900 6.00 X 9 OTR Inside Envelope
86501000 6.50 x 10.00 OTR Inside Envelope
865016 6.50 X 16 OTR Inside Envelope
87001200 7.00 x 12.00 OTR Inside Envelope
870014 7.00 x 14 OTR Inside Envelope
870015 7.00 x 15 OTR Inside Envelope
870016 7.00 x 16 OTR Inside Envelope
870017 7.00 x 17 OTR Inside Envelope
870018 7.00 x 18 OTR Inside Envelope
870020 7.00 x 20 OTR Inside Envelope
872520 7.25 x 20 OTR Inside Envelope
87501000 7.50 x 10 OTR Inside Envelope
875014 7.50 x 14 OTR Inside Envelope
875015 7.50 x 15 OTR Inside Envelope
875016 7.50 x 16 OTR Inside Envelope
875018 7.50 x 18 OTR Inside Envelope
875020 7.50 x 20 OTR Inside Envelope
88175 8 x 17.5 OTR Inside Envelope
882515 8.25 x 15 OTR Inside Envelope
882516 8.25 x 16 OTR Inside Envelope
882520 8.25 x 20 OTR Inside Envelope
885175 8 x 17.5 OTR Inside Envelope
890016 9.00 x 16 OTR Inside Envelope
890020 9.00 x 20 OTR Inside Envelope
8900225 9.00 x 22.5 OTR Inside Envelope
Robbins Envelopes
Our Muscle Shoals, Alabama, plant is dedicated to making the best envelopes available. The new Robbins envelope design has a 43% thicker skirt and a larger, tapered bead, while maintaining elasticity.
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