How does the FLEX-GEAR compensation spring band, 843 series, stainless steel maintain clamp tension during temperature changes and hose shrinkage?

The FLEX-GEAR compensation spring band, 843 series, stainless steel maintains clamp tension during temperature changes and hose shrinkage by integrating a built-in spring assembly under the screw head. Eight disc (washer) springs compress and expand to automatically compensate for dimensional changes in the hose.whether from cold flow, thermal contraction, or large temperature swings.keeping constant radial pressure around the entire circumference. As the hose shrinks the springs extend, and as it expands they compress, so the clamp diameter adjusts while retaining grip and tightness to prevent leaks. Proper installation is confirmed when the screw end protrudes past the housing and the disc springs are visibly flattened. An internal insert protects the hose surface from damage. Recommended tightening torque is 5.6 Nm (max. 9.6 Nm); screw/lock material is galvanized carbon steel, band is stainless steel 300, band width 14.3 mm.

Why does the FLEX-GEAR compensation spring band, 843 series, stainless steel use 8 disc springs under the screw head?

The FLEX-GEAR compensation spring band, 843 series, stainless steel uses 8 disc springs under the screw head to provide continuous, even axial force that compensates for hose shrinkage and thermal expansion/contraction. The stacked washer springs maintain consistent clamping pressure around the entire circumference, automatically adjusting the clamp diameter while keeping the screw end protruding and the springs flattened when properly tightened. This prevents leaks during large temperature shifts or material cold flow, preserves hose integrity (with the internal insert), and ensures reliable sealing without overâtorquing (installation torque 5.6 Nm, max 9.6 Nm). The multiâdisc arrangement delivers stable, repeatable compensation and longâterm sealing performance.

Can the FLEX-GEAR compensation spring band, 843 series, stainless steel be reused after disassembly and re-tightening?

Yes. The FLEX-GEAR compensation spring band, 843 series, stainless steel, can be reused after disassembly and re-tightening, provided it shows no damage and the spring pack remains functional. The clampâs spring mechanism (a set of 8 disc/washer springs under the screw head) is designed to maintain grip and automatically compensate for dimensional changes, so reuse is possible when: - The disc springs are intact and still flatten properly when tightened. - The screw, lock housing and band show no visible wear, distortion, cracks or corrosion that would impair clamping or engagement. - The internal insert protecting the hose surface is undamaged and still provides protection. - Installation torque limits are respected (recommended 5.6 Nm, max 9.6 Nm) during reassembly. If any component is deformed, excessively corroded, the springs are weakened or the screw/lock no longer secures correctly, replace the clamp to ensure leak-free performance, especially in applications with large temperature variations.

FLEX-GEAR compensation spring band, 843 series, stainless steel

All products, Clamps for mounting ends/

Additional information

Material	SS – stainless steel

Band clamp with a worm drive equipped with a spring for compensating dimensional changes in the connection (shrinkage of the hose due to cold flow of the material or due to large temperature variations). The spring consists of a set of 8 disc springs (washer springs) – washers under the head of the screw. This ensures the maintenance of the clamp’s grip and tightness around the entire circumference of the hose, preventing leaks from the installation. The spring mechanism of the clamp allows for automatic adjustment of its diameter while maintaining the clamp’s grip. Particularly recommended in cases of large temperature changes. Proper clamping of the clamp is indicated by the screw end protruding beyond the housing of the lock and the flattened disc springs. The internal insert of the clamp protects the hose surface from damage. Installation tightening torque 5.6 Nm (max. 9.6 Nm). Material of the screw/lock: galvanized carbon steel. Material of the band: stainless steel 300. Band width: 14.3 mm (9/16″).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
AB-843010	FLEX-GEAR band 14÷27 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843012	FLEX-GEAR band 16÷32 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843016	FLEX-GEAR strap 21÷38 mm, SS, steel screw galvanized.	-	-	In stock	Enquiry
AB-843020	FLEX-GEAR strap 20÷44 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843024	FLEX-GEAR band 27÷51 mm, SS, steel screw galvanized.	-	-	In stock	Enquiry
AB-843028	FLEX-GEAR strap 33÷57 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843032	FLEX-GEAR clamp 40÷63 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843036	FLEX-GEAR strap 46÷70 mm, SS, steel screw galvanized.	-	-	In stock	Enquiry
AB-843040	FLEX-GEAR band 52÷76 mm, SS, galvanized steel screw.	-	-	In stock	Enquiry
AB-843044	FLEX-GEAR strap 59÷82 mm, SS, steel screw galvanized.	-	-	In stock	Enquiry
AB-843048	FLEX-GEAR strap 65÷89 mm, SS, steel screw galvanized.	-	-	In stock	Enquiry

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Band clamp with a worm drive equipped with a spring for compensating dimensional changes in the connection (shrinkage of the hose due to cold flow of the material or due to large temperature variations). The spring consists of a set of 8 disc springs (washer springs) – washers under the head of the screw. This ensures the maintenance of the clamp’s grip and tightness around the entire circumference of the hose, preventing leaks from the installation. The spring mechanism of the clamp allows for automatic adjustment of its diameter while maintaining the clamp’s grip. Particularly recommended in cases of large temperature changes. Proper clamping of the clamp is indicated by the screw end protruding beyond the housing of the lock and the flattened disc springs. The internal insert of the clamp protects the hose surface from damage. Installation tightening torque 5.6 Nm (max. 9.6 Nm). Material of the screw/lock: galvanized carbon steel. Material of the band: stainless steel 300. Band width: 14.3 mm (9/16″).