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Stepless Spring Clamp For Thermal Cycle Applications, 1.6875 - 1.9375 Inch Clamping Range, 0.35 Inch Width

Description & Features

This Oetiker stepless spring clamp is designed for thermal cycle applications. It continually adjusts to compensate for hose expansion, contraction, and vibration, preventing cold water leaks. The tongue-in-groove design provides a complete 360° seal around the hose.

This clamp is suitable for use on radiators, thermostat to water pump or engine blocks, and water pump to oil coolers. Features include self-tightening, light weight, adjustable, and reusable construction. The low installation torque requirement minimizes stress and damage to delicate silicone hoses. It has a 1.6875 - 1.9375 inch clamping range and a 0.35 inch width. The Stepless Spring Clamp For Thermal Cycle Applications is made from 300 AISI series stainless steel.

SKU: 17800178

Supplier Part Number (MPN): 17800178

Alternate Part Numbers: C1ZU33, MI-06960088, MINO-00691X61666

Specifications

Clamping Range (in) 1.6875 - 1.9375	Brand Oetiker Inc.	Brand Oetiker	Pack Size 1.00	UOM EA	Supplier Part Number 17800178	Torque Rating 12-18 lb-in	Torque Rating 12-18 lb-in	Product Weight 0.05 lbs	Alternate Part Numbers Alternate Part Number C1ZU33, Alternate Part Number MI-06960088, Alternate Part Number MINO-00691X61666

Similar Products

Model Number	Clamping Range (in)	Torque Rating	Width (in)
17800178 Stepless Spring Clamp	1.6875 - 1.9375	12-18 lb-in	0.35
17800182 Stepless Spring Clamp	2.375 - 2.75	12-18 lb-in	0.35
17800184 Stepless Spring Clamp	2.75 - 3.125	12-18 lb-in	0.35
17800185 Stepless Spring Clamp	2.9375 - 3.3125	12-18 lb-in	0.35
17800186 Stepless Spring Clamp	3.125 - 3.50	12-18 lb-in	0.35

Product Questions & Answers (2)

Question by: Gene C on Jan 21, 2026, 12:29 PM

got a radiator hose that keeps weepin a little when it heats up and cools down. is this clamp meant to stay tight through that?

Answer by: Customer Support on Jan 23, 2026, 9:31 AM

For thermal cycling, the spring automatically reacts to hose expansion, contraction, and vibration so it keeps adjusting as temps change. That continual take-up is meant to help prevent cold water leaks that show up after a heat cycle.

Question by: Kirk S on Oct 31, 2025, 7:16 PM

does this clamp work on silicone coolant hoses or is it gonna crush em if you over tighten it

Answer by: Customer Support on Nov 2, 2025, 6:05 AM

Silicone hoses are actually one of the better fits for this clamp. The installation torque requirement is low by design, which keeps stress off softer hose materials during tightening. The spring inside does the real work after that, automatically adjusting as the hose expands and contracts with heat cycles. You tighten the screw until the spring is fully compressed, then add three more full turns. At that point there should be a small gap of at least 1/8 inch between the two D-Nuts, and that gap tells you the clamp is properly loaded without being cranked down hard enough to bite into the hose.