CRACKBOND® LR-321 LV, LR-321 SLV & LR-321 TXO

LR-321 Formulas Offer Versatility for Various Crack Injection Applications

LR-321 crack injection epoxies offer versatility for various high performance structural applications. LR-321 LV (formerly known as LR-321) is a low viscosity epoxy for cracks that range from 1/8 in. to < 1/4 in. LR-321 SLV is a super low viscosity epoxy for fine cracks up to 1/8 in. LR-321 TXO (formerly known as LR-321G) is a medium viscosity epoxy with unique thixotropic properties making it ideal for injection of blind-sided cracks ≥ 1/4 in.

CRACKBOND® LR-321 LV – Evaluated by National Transportation Product Evaluation Program (NTPEP)

Request more information about CRACKBOND® LR-321 LV, LR-321 SLV & LR-321 TXO or learn how to buy.

  • UL Certified-Drinking Water System Components (NSF/ANSI 61) Joining and Sealing (LV)
  • Acceptable for use in USDA inspected facilities (LV)
  • High Modulus
  • Non-shrink and moisture insensitive allowing for installation in damp applications

CRACKBOND® LR-321 LV

  • Low viscosity – 500 cP
  • ASTM C881-15 Type I, II, IV & V Grade 1, Class C; AASHTO M235

CRACKBOND® LR-321 SLV

  • Super low viscosity – 280 cP
  • Type I, II, IV & V Grade 1 Class B** & C
    **Class B at temperatures ≥ 50 °F

CRACKBOND® LR-321 TXO

  • Medium viscosity – 4,500 cP
  • Thixotropic crack injection
LR-321 LV
Size Part No. Qty
6.1 fl. oz. A6-321LV 12
15.9 fl. oz. A16-321LV 10
102 fl. oz. kit BUG-321LV 1
3 gal kit B3G-321LV 1
LR-321 SLV
15.9 fl. oz. A16-321SLV 10
102 fl. oz. kit BUG-321SLV 1
LR-321 TXO
15.9 fl. oz. A16-321TXO 10
102 fl. oz. kit BUG-321TXO 1
3 gal kit B3G-321TXO 1

View Gallery of Available Packaging

Part No. Description
LR-321 LV
TM9HD 9 oz. Manual Dispensing Tool for 6.1 oz. Cartridge
TM16HD 16 oz. Manual Dispensing Tool for 16 oz. Cartridge
TA16HD-A 16 oz. Pneumatic Dispensing Tool
T12CSREZ Nozzle & Flow Control for 6.1 oz. Cartridge
T12CSREZ-3PK 3 pack T12CSREZ; 12 each 3-packs per case (36 nozzles)
T12LV Nozzle & Flow Control for 16 oz. Cartridge
T12LV-3PK 3 pack T12LV; 12 each 3-packs per case (36 nozzles)
LR-321 SLV
TM16HD 16 oz. Manual Dispensing Tool for 16 oz. Cartridge
TA16HD-A 16 oz. Pneumatic Dispensing Toolfor 16 oz. Cartridge
T12LV Nozzle & Flow Control for 16 oz. Cartridge
T12LV-3PK 3 pack T12LV; 12 each 3-packs per case (36 nozzles)
LR-321 TXO
TM16HD 16 oz. Manual Dispensing Tool for 16 oz. Cartridge
TA16HD-A 16 oz. Pneumatic Dispensing Toolfor 16 oz. Cartridge
T-CSRV2 Nozzle & Flow Control for 16 oz. Cartridge
T-CSRV2-3PK 3 pack T-CSRV2; 12 each 3-packs per case (36 nozzles)

View Gallery of Dispensing Tools & Accessories

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Dispensing Tools & Accessories

Available Packaging