Cherne® PROVING RING, 6 IN. 5% Deflection, SDR 35

The Cherne® Proving Ring, 6 in., 5% Deflection, SDR 35 (part #73199) is a precision verification ring used to confirm that a 6 in. SDR 35 deflection gauge (mandrel) still meets the 5% deflection specification. Running the mandrel through the proving ring before a deflection test proves the gauge is accurate — a step many municipalities require before accepting test results.

Key Features

• Gauge verification — confirms your 6 in. deflection gauge is true to size, protecting the credibility of every test you run
• Matched to SDR 35 at 5% deflection — sized for the common 5% deflection acceptance spec on 6 in. SDR 35 PVC sewer pipe and laterals (ASTM D3034)
• Fast field check — quick pass/no-pass confirmation with no measurement tools needed
• Part of the Cherne® deflection testing system — standard proving ring sizes run from 6 in. to 18 in. to cover your full gauge set

Applications

Used by municipal inspectors and utility contractors to certify deflection gauges before post-installation mandrel testing of small-diameter flexible SDR 35 sewer pipe and service laterals, confirming proper bedding and backfill.

Questions on sizing or bulk pricing? Call (866) 514-3684 or email us — we ship within the USA and welcome tax-exempt purchasing for qualified accounts.