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OTS Guardian M9 Inner Clamp Ring

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$4.95
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Product Description

OTS Guardian M9 Inner Clamp Ring Replacement

The OTS Guardian M9 Inner Clamp Ring (SKU: 873005-000 / OTS-873005-000) is an essential OEM replacement hardware component designed specifically for the Ocean Technology Systems (OTS) Guardian Full Face Mask (FFM).

This rigid internal ring sits inside the main visor housing, securing the perimeter of the silicone face skirt and oral-nasal pocket to the outer mask frame.

It ensures uniform clamping compression across the seal to maintain a 100% airtight and watertight breathing cavity.

The OTS Guardian M9 Inner Clamp Ring (873005-000) is a genuine OEM structural component used in the Guardian Full Face Mask's internal clamping assembly.
 
Working with the Interior Vent Clamp and Inner Clamp Screw, it helps maintain proper alignment, retention, and durability of critical mask components, contributing to the reliable performance that Guardian masks are known for.

The OTS Guardian M9 Inner Clamp Ring (873005-000) is a genuine OEM structural component used within the OTS Guardian Full Face Mask. The Inner Clamp Ring forms part of the mask's internal retention and clamping assembly, helping secure critical components within the mask body and visor interface system. It works in conjunction with the Interior Vent Clamp and Inner Clamp Screw to maintain proper assembly alignment and structural integrity.

As identified in the official Guardian parts schematic, the Inner Clamp Ring is designated as M9 and serves as one of the key retaining components in the front mask assembly.

Product Type: OEM Replacement Inner Clamp Ring / Retention Bezel

Compatibility: Exclusively engineered for the OTS Guardian Full Face Mask frame assembly. (Does not fit Spectrum, Interspiro Divator, or Ocean Reef IDM systems).

Primary Function: Anchors the internal silicone skirt lip against the rigid polycarbonate visor and outer housing, providing structural integrity and preventing water intrusion around the face seal interface.

FEATURES:

  • Genuine OTS factory replacement part.
  • Designed specifically for the Guardian Full Face Mask.
  • Supports internal mask assembly retention.
  • Maintains proper alignment of connected components.
  • Engineered for long-term durability in diving environments.
  • Works with adjacent visor and vent-clamp hardware.
  • Precision-fit OEM component.
  • Suitable for recreational, commercial, military, and public-safety diving applications.

Function Within the Guardian Mask

The Inner Clamp Ring functions as part of the Guardian's internal clamping system. Its primary purposes include:

  • Supporting structural alignment of mask components.
  • Assisting with retention of internal assemblies.
  • Providing a stable mounting interface for connected hardware.
  • Helping maintain proper fit and positioning of the visor and clamp system.
  • Contributing to the overall durability of the mask assembly.

The part is integrated into the mask's front section where several components work together to create the Guardian's rugged construction.

Product Information

Product CategoryAccessories
SKUOTS-873005-000
Stock4
ConditionNew
BrandOcean Technology Systems
More Info

TECH SPECS:

MANUFACTURER - Ocean Technology Systems (OTS)

PRODUCT NAME - Quick Connect Casing

Guardian Inner Clamp Ring

PART NUMBER = 873005-000

SKU = OTS-873005-000

SCHEMATIC REFERENCE - M9

SYSTEM - Guardian Full Face Mask 

ASSEMBLY LOCATION - Front mask clamp system

FUNCTION  - Internal retention & clamp ring

APPLICATION - Service and replacement part

COMPATIBILITY - OTS Guardian FFM

INSTALLATION LOCATION - Front mask clamp system

MODEL /SIZING DESIGNATOR = M9 Profile Inner Clamp

MATERIAL - High-Impact Delrin / Marine-Grade Glass-Filled Polymer Composite

APPLICATION POINT - Internal Mask Frame & Silicone Skirt Retention Interface

CORROSION PROTECTION - Fully resistant to saltwater corrosion, pool chemicals, and UV degradation

Key Advantages & Operational Role

  • Uniform Sealing Pressure: Distributes clamping force evenly around the entire inner perimeter of the mask skirt, preventing pinch points or gaps that could cause slow leaks under depth pressure.

  • Structural Rigidity: Holds the internal oral-nasal pocket firmly aligned with the second-stage regulator intake and ambient breathing valve (ABV) ports.

  • Non-Corrosive Construction: Made from ultra-durable marine-grade composite plastic that will never rust, pit, or seize against adjacent stainless steel screws or rubber seals.

Tips & Tricks for Installation & Maintenance

Perfect Skirt Track Alignment

  • When reinstalling or replacing the inner clamp ring during a mask overhaul, verify that the silicone skirt’s retention lip is completely clean and sitting flat inside the inner frame channel before pressing the clamp ring into place.

  • Avoid twisting or stretching the silicone skirt, as an unseated skirt section will prevent the ring from sitting flush.

Alternating Screw Torque

  • When securing the inner clamp ring using the M6 inner clamp screws (SKU: 244099-000), thread each screw in halfway first.

  • Alternate back and forth between sides (star pattern) while tightening to ensure equal compression across the whole ring assembly.

Inspect for Cracks or Stress Fractures

  • Inspect the screw mounting bosses and edge channels of the old clamp ring during annual maintenance. If you notice micro-fractures, stress whitening, or stripped threads, replace the ring immediately to prevent structural failure underwater.

Post-Dive Care & Flushing

  • Soak the entire full face mask in warm, fresh water after every dive.

  • Gently agitate clean water through the internal mask cavity to wash away trapped salt crystals and sand grit that can accumulate behind the clamp ring and wear down the silicone skirt edge over time.

Position Within the Guardian Full Face Mask

According to the Guardian maintenance schematic, the M9 Inner Clamp Ring is located within the front assembly area of the mask and works directly with the Interior Vent Clamp and Inner Clamp Screw. This assembly helps provide the Guardian's robust construction and dependable operational reliability.


About the OTS Guardian Full Face Mask

The OTS Guardian Full Face Mask is designed for recreational, military, public safety, and commercial diving applications. Notable features include:

  • Removable second-stage regulator
  • Double-seal silicone skirt
  • Communications system compatibility
  • Fog-resistant visor design
  • Adjustable equalization system
  • Ambient Breathing Valve (ABV) compatibility
  • Quick-release regulator attachment system

Compatibility

The OTS-873005-000 Inner Clamp Ring is designed for:

  • OTS Guardian Full Face Mask
  • Guardian maintenance and overhaul procedures.
  • Repair of damaged or worn clamping assemblies. 

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OTS Guardian M9 Inner Clamp Ring
$4.95
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