Precision O-Ring Inside Diameter Tapes

Due to the recent fire and our production interruptions we are unable to produce White Easy to Read products for the foreseeable future. We recommend Blue Easy to Read tapes as an alternative for tape sizes 2” – 12” (50mm - 300mm) and over. We are working hard to restore full production and apologize for any inconvenience this may cause. Please call or email our office to discuss product options.

Pi Tape® brand Precision O-Ring Inside Diameter tapes are specifically designed to achieve quick, accurate inside diameter measurements of O-Rings and other soft-walled parts.

Tapes with a starting point of 2” (50.8mm) are made with a 1/4" (6.35mm) wide Gage Member and a 1/2" (12.7mm) wide Vernier Section. The standard thickness for 1/4" X 1/2" (6.35mm X 12.7mm) in Spring Steel, Blue Or White Easy to Read is .005" (0.13mm) and for Stainless Steel is .006” (0.15mm).

Tapes with a starting point of 12” (300mm) are made with a 3/8” (9.53mm) wide Gage Member and a 3/4" (19.05mm) wide Vernier Section. The standard thickness for 3/8” X 3/4" (9.53mm X 19.05mm) all material is .010” (0.25mm).

• Standard O-Ring tapes have an accuracy of ± .003” up to 48” (± .09mm up to 1200mm)
• Standard O-Ring tapes starting between 48” -72” (1200mm-1800mm) and extended range tapes (tapes with over 12”/300mm of usable range) have an accuracy of ± .005” up to 72” (± 14mm up to 1800mm)

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).

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

 2022 Precision Inside Diameter O-Ring Tape Price List

 2022 Custom Made Precision Inside Diameter O-Ring Tape Price List