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FlexSealGroup

Flex-Seal ® Couplings

An extensive line of flexible sewer couplings that connect similar and dissimilar pipe materials and sizes. Sizes 1-1/4" to 72"

  • Flexibility - Sleeve is manufactured of molded natural and synthetic rubber
  • Leakproof Seal - Inside surfaces of transitional size couplings are stepped to conform better to different pipe sizes
  • Tight Fitting - Two 300 Series Stainless Steel worm drive clamping bands hold pipe ends securely
  • Corrosion Resistant - Use of stainless steel clamping bands are highly effective in a variety of environments
  • Versatile - Blends of natural and synthetic rubbers permit a substantial degree of distortion without change in basic physical or chemical resistance unlike other manufacturers' thermoplastic coupling materials
Technical Data Specifications
PROPERTY Compound Plasticized
PVC
Ozone Resistance A A
Weathering, Sunlight Aging and Outdoor Use
A A
Water Resistance
A A
Low Temperature Flexibility
A C
High Temperature Resistance
A D
Animal Fat Resistance
B
D
Vegetable Oils Resistance B B
Ammonia A A
Compression Set A C

Ratings: A - Excellent; B - Good; C - Fair; D - Poor

Specifications:

  • Manufactured with natural and synthetic rubbers conforming to ASTM C 425, ASTM C 1173
  • 300 Series Marine Grade Stainless Steel conforms to ASTM A 240

Flex-Seal Couplings have a tolerance range of approximately ± 3% on sizes up to 12" nominal diameter. Please contact our order desk for inquiries on larger couplings.

MBDC
ASTM
ASTM C1173-06
ASTM A240/A240M-06
UPC
4224 

Flex Finder

Select one or more criteria leaving others as “Any” and press “Find”.

From Size From Type To Size To Type  
MR01 - Clay to Clay
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR01 44 4" Clay TO 4" Clay   5.2 132 5.2 132 4 102
MR01 54 5" Clay TO 4" Clay f 6.45 164 5.2 132 6 152
MR01 55 5" Clay To 5" Clay   6.45 164 6.45 164 6 152
MR01 64 6" Clay TO 4" Clay   7.5 191 5.2 132 6 152
MR01 65 6" Clay TO 5" Clay   7.5 191 6.45 164 6 152
MR01 66 6" Clay TO 6" Clay   7.5 191 7.5 191 6 152
MR01 86 8" Clay TO 6" Clay f 9.7 246 7.5 191 6 152
MR01 88 8" Clay TO 8" Clay   9.7 246 9.7 246 6 152
MR01 1008 10" Clay TO 8" Clay f 12.15 309 9.7 246 6.5 165
MR01 1010 10" Clay TO 10" Clay   12.15 309 12.15 309 6 152
MR01 1210 12" Clay TO 10" Clay   14.5 368 12.15 309 6.5 165
MR01 1212 12" Clay TO 12" Clay   14.5 368 14.5 368 6 152
MR01 1512 15" Clay TO 12" Clay f 18.2 462 14.5 368 6 152
MR01 1515 15" Clay TO 15" Clay   18.2 462 18.2 462 10 254
MR01 1818 18" Clay TO 18" Clay   22.2 564 22.2 564 10 254
MR01 2121 21" Clay TO 21" Clay   25.75 654 25.75 654 10 254
MR01 2424 24" Clay TO 24" Clay   30.15 766 30.15 766 10 254
MR01 2727 27" Clay TO 27" Clay   32.5 826 32.5 826 10 254
MR02 - Clay to Clay or Plastic
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR02 43 4" Clay to 3" CI/PL   5.20 132 3.38 86 4.00 102
MR02 44 4" Clay to 4" CI/PL   5.20 132 4.36 111 4.00 102
MR02 46 4" Clay to 6" CI/PL   5.20 132 6.45 164 6.00 152
MR02 55 5" Clay To 5" CI/PL   6.45 164 5.46 139 5.00 127
MR02 64 6" Clay to 4" CI/PL   7.50 191 4.36 111 6.00 152
MR02 66 6" Clay to 6" CI/PL   7.50 191 6.45 164 6.00 152
MR02 86 8" Clay to 6" CI/PL   9.70 246 6.45 164 6.00 152
MR02 88 8" Clay to 8" CI/PL   9.70 246 8.44 214 6.00 152
MR02 1008 10" Clay to 8" CI/PL f 12.15 309 8.44 214 6.50 165
MR02 1010 10" Clay to 10" CI/PL   12.15 309 10.50 267 6.50 165
MR02 1210 12" Clay to 10" CI/PL f 14.50 368 10.50 267 6.50 165
MR02 1212 12" Clay to 12" CI/PL   14.50 368 12.50 318 6.50 165
MR02 1512 15" Clay to 12" CI/PL   18.20 462 12.50 318 6.00 152
MR02 1515 15" Clay to 15" CI/PL   18.20 462 15.25 387 6.00 152
MR02 1818 18" Clay to 18" CI/PL f 22.20 564 18.75 476 10.00 254
MR02 2121 21" Clay to 21" CI/PL f 25.75 654 21.90 556 10.00 254
MR02 2424 24" Clay to 24" CI/PL f 30.15 766 24.80 630 10.00 254
MR02 2727 27" Clay to 27" CI/PL f 32.50 826 27.90 709 10.00 254
MR03 - Clay to Asbestos Cement or Ductile Iron
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR03 44 4" Clay To 4" Asbestos Cement or Ductile Iron   5.2 132 4.78 121 4 102
MR03 54 5" Clay To 4" Asbestos Cement or Ductile Iron f 6.45 164 4.78 121 5 127
MR03 55 5" Clay To 5" Asbestos Cement or Ductile Iron f 6.45 164 5.9 150 6 152
MR03 64 6" Clay To 4" Asbestos Cement or Ductile Iron f 7.5 191 4.78 121 6 152
MR03 65 6" Clay TO 5" Asbestos Cement or Ductile Iron f 7.5 191 5.9 150 6 152
MR03 66 6" Clay To 6" Asbestos Cement or Ductile Iron   7.5 191 6.94 176 6 152
MR03 86 8" Clay To 6" Asbestos Cement or Ductile Iron f 9.7 246 6.94 176 6 152
MR03 88 8" Clay To 8" Asbestos Cement or Ductile Iron   9.7 246 9 229 6 152
MR03 1008 10" Clay To 8" Asbestos Cement or Ductile Iron f 12.15 309 9 229 6.5 165
MR03 1010 10" Clay To 10" Asbestos Cement or Ductile Iron   12.15 309 10.95 278 6.5 165
MR03 1210 12" Clay To 10" Asbestos Cement or Ductile Iron f 14.5 368 10.95 278 6.5 165
MR03 1212 12" Clay To 12" Asbestos Cement or Ductile Iron   14.5 368 13.03 331 6.5 165
MR03 1512 15" Clay To 12" Asbestos Cement or Ductile Iron f 18.2 462 13.03 331 6 152
MR03 1516 15" Clay To 16" Asbestos Cement or Ductile Iron   18.2 462 17.8 452 10 254
MR03 1818 18" Clay To 18" Asbestos Cement or Ductile Iron f 22.2 564 19.5 495 10 254
MR04 - Concrete to Concrete
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR04 44 4" Concrete To 4" Concrete   5.75 146 5.75 164 4.00 102
MR04 66 6" Concrete To 6" Concrete   7.81 198 7.81 198 6.00 152
MR04 86 8" Concrete To 6" Concrete f 10.25 260 7.81 198 6.00 152
MR04 88 8" Concrete To 8" Concrete   10.25 260 10.25 260 6.00 152
MR04 1008 10" Concrete To 8" Concrete f 12.55 319 10.25 260 6.00 152
MR04 1010 10" Concrete To 10" Concrete   12.55 319 12.55 319 6.00 152
MR04 1210 12" Concrete To 10" Concrete f 14.85 377 12.55 319 6.00 152
MR04 1212 12" Concrete To 12" Concrete   14.85 377 14.85 377 6.00 152
MR04 1515 15" Concrete To 15" Concrete   19.75 502 19.75 502 10.00 254
MR04 1818 18" Concrete To 18" Concrete   22.50 572 22.50 572 10.00 254
MR04 2121 21" Concrete To 21" Concrete   26.50 673 26.50 673 10.00 254
MR04 2424 24" Concrete To 24" Concrete   30.50 775 30.50 775 10.00 254
MR04 2727 27" Concrete To 27" Concrete   34.00 864 34.00 864 10.00 254
MR06 - Concrete to Cast Iron or Plastic
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR06 43 4" Concrete To 3" CI/PL f 5.75 146 3.38 86 4.00 102
MR06 44 4" Concrete To 4" CI/PL   5.75 146 4.36 111 4.00 102
MR06 64 6" Concrete To 4" CI/PL   7.81 198 4.36 111 6.00 152
MR06 66 6" Concrete To 6" CI/PL   7.81 198 6.45 164 6.00 152
MR06 86 8" Concrete To 6" CI/PL f 10.25 260 6.45 164 6.00 152
MR06 88 8" Concrete To 8" CI/PL   10.25 260 8.25 214 6.00 152
MR06 1008 10" Concrete To 8" CI/PL f 12.88 327 8.44 214 6.00 152
MR06 1010 10" Concrete To 10" CI/PL   12.88 327 10.60 269 6.00 152
MR06 1210 12" Concrete To 10" CI/PL f 15.40 391 10.50 267 6.00 152
MR06 1212 12" Concrete To 12" CI/PL   15.40 391 12.60 320 6.00 152
MR06 1515 15" Concrete To 15" CI/PL f 19.75 502 15.25 387 10.00 254
MR06 1818 18" Concrete To 18" CI/PL f 22.50 572 18.75 476 10.00 254
MR06 2121 21" Concrete To 21" CI/PL f 26.50 673 21.90 556 10.00 254
MR06 2424 24" Concrete To 24" CI/PL f 30.50 775 24.80 630 10.00 254
MR06 2727 27" Concrete To 27" CI/PL f 34.00 864 27.90 709 10.00 254
MR51 - Asbestos Cement or Ductile Iron to Cast Iron or Plastic
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR51 43 4" AC/DI To 3" CI/PL f 4.78 121 3.38 86 4.00 102
MR51 44 4" AC/DI To 4" CI/PL   4.78 121 4.36 111 4.00 102
MR51 54 "O" 5" AC/DI To 4" Oversize CI/PL   5.65 144 4.95 126 4.00 102
MR51 55 5" AC/DI To 5" CI/PL f 5.90 150 5.46 139 5.00 127
MR51 56 5" AC/DI To 6" CI/PL   5.90 150 6.45 164 5.00 127
MR51 64 6" AC/DI To 4" CI/PL   6.94 176 4.36 111 6.00 152
MR51 65 6" AC/DI To 5" CI/PL f 6.94 176 5.46 139 6.00 152
MR51 66 6" AC/DI To 6" CI/PL   6.94 176 6.45 164 6.00 152
MR51 86 8" AC/DI To 6" CI/PL f 9.00 229 6.45 164 6.00 152
MR51 88 8" AC/DI To 8" CI/PL   9.00 229 8.44 214 6.00 152
MR51 1008 10" AC/DI To 8" CI/PL f 11.12 282 8.44 214 6.00 152
MR51 1010 10" AC/DI To 10" CI/PL   11.12 282 10.61 269 6.00 152
MR51 1210 12" AC/DI To 10" CI/PL f 13.20 335 10.61 269 6.00 152
MR51 1212 12" AC/DI To 12" CI/PL   13.20 335 12.50 318 6.00 152
MR51 1615 16" AC/DI To 15" CI/PL f 17.80 452 15.25 387 10.00 254
MR51 1818 18" AC/DI To 18" CI/PL f 19.50 495 18.75 476 10.00 254
MR55 - Asbestos Cement or Ductile Iron to Asbestos Cement or Ductile Iron
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR55 44 4" AC/DI To 4" AC/DI   4.78 121 4.78 121 4.00 102
MR55 54 5" AC/DI To 4" AC/DI f 5.90 150 4.78 121 6.00 152
MR55 55 5" AC/DI To 5" AC/DI   5.90 150 5.90 150 6.00 152
MR55 64 6" AC/DI To 4" AC/DI   6.94 176 4.78 121 6.00 152
MR55 65 6" AC/DI To 5" AC/DI f 6.94 176 5.90 150 6.00 152
MR55 66 6" AC/DI To 6" AC/DI   6.94 176 6.94 176 6.00 152
MR55 86 8" AC/DI To 6" AC/DI f 9.00 229 6.94 176 6.00 152
MR55 88 8" AC/DI To 8" AC/DI   9.00 229 9.00 229 6.00 152
MR55 1008 10" AC/DI To 8" AC/DI f 11.12 282 9.00 229 6.00 152
MR55 1010 10" AC/DI To 10" AC/DI   11.12 282 11.12 282 6.00 152
MR55 1210 12" AC/DI To 10" AC/DI f 13.20 335 11.12 282 6.00 152
MR55 1212 12" AC/DI To 12" AC/DI   13.20 335 13.20 335 6.00 152
MR55 1616 16" AC/DI To 16" AC/DI   17.80 452 17.80 452 10.00 254
MR55 1818 18" AC/DI To 18" AC/DI   19.50 495 19.50 495 10.00 254
MR56 - Cast Iron or Plastic to Cast Iron or Plastic
dimensional reference
Product Name Description Flange
Bushing 		A in. A mm B in. B mm C in. C mm
MR56 125 1½" Tubbing, Copper or 1¼" PL to 1½" Tubbing, Copper or 1¼" PL   1.53 39 1.53 39 2.50 64
MR56 15 1½" CI/PL to 1½" CI/PL   1.91 48 1.91 48 3.50 89
MR56 15/125 1¼" CI/PL to 1½" Tubbing, Copper or 1¼' PL   1.91 48 1.53 39 2.50 64
MR56 215 2" CI/PL TO 1 1/2" CI/PL   2.40 61 1.91 48 3.50 89
MR56 22 2" CI/PL TO 2" CI/PL   2.40 61 2.40 61 3.50 89
MR56 22/125 2" CI/PL TO 1 1/4" PL   2.40 61 1.53 39 2.50 64
MR56 315 3" CI/PL TO 1 1/2" CI/PL   3.38 86 1.91 48 4.00 102
MR56 32 3" CI/PL TO 2" CI/PL   3.38 86 2.40 61 4.00 102
MR56 33 3" CI/PL TO 3" CI/PL   3.38 86 3.38 86 4.00 102
MR56 415 4" CI/PL TO 1 1/2" CI/PL   4.36 111 1.91 48 4.00 102
MR56 42 4" CI/PL TO 2" CI/PL   4.36 111 2.40 61 4.00 102
MR56 43 4" CI/PL TO 3" CI/PL   4.36 111 3.38 86 4.00 102
MR56 43 OFFSET 4" CI/PL TO 3" CI/PL Eccentric   ? ? ? ? ? ?
MR56 44 4" CI/PL TO 4" CI/PL   4.36 111 4.36 111 4.00 102
MR56 53 5" CI/PL TO 3" CI/PL f 5.46 139 3.38 86 4.00 102
MR56 54 5" CI/PL TO 4" CI/PL   5.46 139 4.36 111 4.00 102
MR56 55 5" CI/PL TO 5" CI/PL   5.46 139 5.46 139 4.00 102
MR56 63 6" CI/PL TO 3" CI/PL f 6.45 164 3.38 86 6.00 152
MR56 64 6" CI/PL TO 4" CI/PL   6.45 164 4.36 111 6.00 152
MR56 65 ARC 6" CI/PL TO 5" CI/PL              
MR56 65 "O" 6" OVERSIZE CI/PL TO 5" CI/PL   6.58 167 5.46 139 6.50 165
MR56 66 6" CI/PL TO 6" CI/PL   6.45 164 6.45 164 6.00 152
MR56 84 8" CI/PL TO 4" CI/PL   ? ? ? ? ? ?
MR56 85 "O" 8" OVERSIZE CI/PL TO 5" CI/PL   8.70 221 5.46 139 7.00 178
MR56 86 8" CI/PL TO 6" CI/PL   8.44 214 6.45 164 6.00 152
MR56 88 8" CI/PL TO 8" CI/PL   8.44 214 8.44 214 6.00 152
MR56 1006 "O" 10" OVERSIZE CI/PL TO 6" CI/PL   10.70 272 6.53 166 7.00 178
MR56 1008 10" CI/PL TO 8" CI/PL   10.50 267 8.44 214 6.50 165
MR56 1010 10" CI/PL TO 10" CI/PL   10.50 267 10.50 267 6.50 165
MR56 1210 12" CI/PL TO 10" CI/PL   12.50 318 10.50 267 6.50 165
MR56 1212 12" CI/PL TO 12" CI/PL   12.50 318 12.50 318 6.50 165
MR56 1512 15" CI/PL TO 12" CI/PL f 15.25 387 12.50 318 6.00 152
MR56 1515 15" CI/PL to 15" CI/PL              
MR56 1815 18" CI/PL to 15" CI/PL f            
MR56 1818 18" CI/PL to 18" CI/PL              
MR56 2121 21" CI/PL to 21" CI/PL              
MR56 2424 24" CI/PL to 24" CI/PL              
MR56 2727 27" CI/PL to 27" CI/PL              

 

Mission Rubber Company , A Division of MCP Industries, Inc.
1660 Leeson Lane, Corona, CA 92879
Mailing Address: Mission Rubber Company, P.O. Box 2349, Corona, CA 92878-2349
Phone: (800) 854-9991     Fax: (800) 637-4601
Intl. Phone: (951) 736-1343      Intl. Fax: (951) 736-0481