Non Silicon Antifoaming Agent T921

Non Silicon Antifoaming Agent Lubricating Oil Additives T921

Ultra-Efficient Foam Control for Demanding Lubrication Systems

T921 has good compatibility with various additives, has little effect on the air release of oil products, has good oil solubility, is easy to use, and is added in a spraying manner at 60℃-70℃.

T921 is suitable for use as a defoaming agent in various lubricating oils, especially for anti-wear hydraulic oils and oil products with requirements for air release values

Product Introduction

T921 is a high-performance silicone-free antifoaming agent engineered for demanding lubricant and industrial fluid applications. It rapidly collapses surface foam and suppresses microfoam entrainment without compromising air release properties. Ideal for high-speed gearboxes, turbine oils, and circulating systems requiring strict foam control per ISO 6743/ISO 12925 standards.

<50 mL foam volume in all ASTM D892 sequences (I/II/III) within 5 seconds—critical for high-RPM gearboxes and hydraulic systems.

Zero silicone content eliminates filter clogging risks and deposit formation.

Maintains efficacy after 1,000+ hours at 120°C (Δfoam suppression ≤10% vs. initial).

Shear-resistant polymer structure prevents viscosity loss in high-pressure pumps.

Fully soluble in Group I-V base oils, synthetic esters, and water-glycol fluids.

Compatible with ZDDP, detergents, and corrosion inhibitors.

Non-toxic, biodegradable (OECD 301F), and REACH compliant.

Application

Target Fluids:

Industrial gear oils (ISO VG 68-680)

Turbine oils (DIN 51515-2)

Fire-resistant hydraulic fluids (ISO 12922 HFC)

Recommended Dosage

10–200 ppm

Characteristics

 

Parameter

Specification

Test Method

Appearance

Transparent Liquid

Visual

Mechanical Impurity,%

≤0.05

GB/T511

Density (20°C),kg/m³

750-850

GB/T1884

Anti-foam Performance(24°C,500SN middle),ml/ml

100/0

GB/T12579

Outgassing (500SN) min

12

SH/T0308

Packaging & Storage

Packaging:25Kg/200 kg steel drum

Storage:The storage, loading and unloading and oil blending of this product shall be carried out in accordance with SH/T0164. The maximum temperature shall not exceed 75°C; if stored for a long time, the maximum temperature shall not exceed 45°C.

Shelf life:36 months (unopened)

12 months (opened, under nitrogen)

Safety:This product is non-flammable, non-explosive and non-corrosive. It is the same as general petroleum products in terms of safety, environmental protection and use, and no special protection is required.

Why Choose T921?

OEM Approved: Meets Siemens TLV 901304 foam limits for turbine oils and Eaton 90210 for hydraulic fluids.

No Compromise: Preserves air release (<5 min) while eliminating foam—unlike silicone-based alternatives.

Universal Application: Effective in acidic (pH 4) and alkaline (pH 10) environments.

Technical Support & Samples

✉️ Email:jzsrunda@163.com

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