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Pi Tape® brand White Easy to Read O-Ring Inside Diameter tapes are best suited for measuring diameters in low-light environments. They are not intended for use with chemicals or in corrosive environments. These tapes feature dark lines and numerals on a white background.

Each Pi Tape® brand precision measuring tape is furnished with a Calibration Report whose measurement results are traceable through NIST to the international system of units (SI).

Please click here to view our ISO/IEC 17025:2017 Certificate of Accreditation (pdf). Not all items we calibrate are included in our scope, however the calibration techniques and procedures are all in compliance with ISO/IEC 17025:2017.

Specialty sizes, widths and larger tapes are available upon request.

 O-Ring Inside Diameter Price List

 Custom Made O-Ring Inside Diameter Price List


O-Ring Inside Diameter Tapes White Easy to Read Inch Purchase Options


**The standard width for these tapes is 1/4" gage member X 1/2" vernier section.


Part # Size Gage Width Thickness Vernier Section Width Price Link
** RT1WEZ ** 2" - 12" I.D. 0.25" .005" 0.5" 196.00 Go to Product Page
** RT1SPWEZ ** 2" - 24" I.D. 0.25" .005" 0.5" 326.00 Go to Product Page
RT2WEZ 12" - 24" I.D. 0.375" .010" 0.750" 216.00 Go to Product Page
RT2SPWEZ 12" - 36" I.D. 0.375" .010" 0.750" 335.00 Go to Product Page
RT3WEZ 24" - 36" I.D. 0.375" .010" 0.750" 226.00 Go to Product Page
RT3SPWEZ 24" - 48" I.D. 0.375" .010" 0.750" 350.00 Go to Product Page
RT4WEZ 36" - 48" I.D. 0.375" .010" 0.750" 247.00 Go to Product Page
RT5WEZ 48" - 60" I.D. 0.375" .010" 0.750" 259.00 Go to Product Page
RT6WEZ 60" - 72" I.D. 0.375" .010" 0.750" 272.00 Go to Product Page