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MIL-PRF-23827

What is MIL-PRF-23827?

MIL-PRF-23827 is a United States military performance specification that details the requirements for a specialised grease intended for use at extremely low temperatures on military and civil aircraft.

This specification (formerly MIL-G-23827) covers a grease formulated with a synthetic base oil (typically a diester) and various thickeners and additives. It is designed to provide excellent load-carrying capacity, superior corrosion inhibition, and exceptional water resistance across a very wide operating temperature range.

The primary use for MIL-PRF-23827 grease is in applications requiring reliable lubrication in extreme cold environments:

  • Aircraft and Instrument Lubrication: General airframe components.
  • Gear and Actuator Screws: Highly loaded gears, worm gears, and actuator screw mechanisms.
  • Bearings: Instrument and gear bearings where precision is critical.

The grease is effective across a broad temperature spectrum, typically from -73°C to +121°C (-100°F to +250°F).

Variations of MIL-PRF-23827

The MIL-PRF-23827 specification covers one grade of grease but includes two distinct types, categorized by their thickener system:

TypeThickener TypeCompatibility Note
Type ITypically soap-based (e.g., Lithium Complex)Do not mix with Type II greases
Type IITypically non-soap/clay-based (e.g., Microgel/organo-clay)Do not mix with Type I greases
The grease meeting this specification is generally identified by a single NATO code: G-354.

Featured Products

AeroShell Grease 33 3Kg Can *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
AeroShell Grease 33 3Kg Can *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
Silmid P/N: 
ASG1L00003
In Stock - 88 Available
£110.14 excl VAT
£132.17  inc VAT
AeroShell Grease 33 400gm Cartridge *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
AeroShell Grease 33 400gm Cartridge *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
Silmid P/N: 
ASG1L00400
In Stock - 1841 Available
£15.63 excl VAT
£18.76  inc VAT
AeroShell Grease 33 17Kg Pail *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
AeroShell Grease 33 17Kg Pail *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
Silmid P/N: 
ASG1L035LB
In Stock - 3 Available
£660.03 excl VAT
£792.04  inc VAT
AeroShell Grease 33 500gm Can *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
AeroShell Grease 33 500gm Can *BMS 3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
Silmid P/N: 
P1300133
In Stock - 6 Available
£29.10 excl VAT
£34.92  inc VAT
AeroShell Grease 33 50Kg Pail *BMS3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
AeroShell Grease 33 50Kg Pail *BMS3-33C Type 1 *MIL-PRF-23827C Type I *IPS 09-06-002-03
Silmid P/N: 
ASG1L0050K
No Stock – Typically ships in 33 business days from order date
£1895.24 excl VAT
£2274.29  inc VAT
AeroShell Grease 7 400gm Cartridge *MIL-PRF-23827C Type II
AeroShell Grease 7 400gm Cartridge *MIL-PRF-23827C Type II
Silmid P/N: 
50019733
In Stock - 128 Available
£19.19 excl VAT
£23.03  inc VAT
AeroShell Grease 7 3Kg Can *MIL-PRF-23827C Type II
AeroShell Grease 7 3Kg Can *MIL-PRF-23827C Type II
Silmid P/N: 
ASG0E00003
In Stock - 46 Available
£133.29 excl VAT
£159.95  inc VAT
AeroShell Grease 7 500gm Can *MIL-PRF-23827C Type II
AeroShell Grease 7 500gm Can *MIL-PRF-23827C Type II
Silmid P/N: 
ASG0E00500
In Stock - 3 Available
£32.14 excl VAT
£38.57  inc VAT
AeroShell Grease 7 17Kg Pail *MIL-PRF-23827C Type II
AeroShell Grease 7 17Kg Pail *MIL-PRF-23827C Type II
Silmid P/N: 
ASG7000017
In Stock - 3 Available
£833.28 excl VAT
£999.94  inc VAT
Mobil Grease 33 Synthetic Aviation Grease 2Kg Can *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Mobil Grease 33 Synthetic Aviation Grease 2Kg Can *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Silmid P/N: 
MOB33002KG
In Stock - 12 Available
£87.41 excl VAT
£104.89  inc VAT
Mobil Grease 33 Synthetic Aviation Grease 380gm Cartridge *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Mobil Grease 33 Synthetic Aviation Grease 380gm Cartridge *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Silmid P/N: 
MOB330390G
Available to Back Order - 37 available in 3 days
£17.22 excl VAT
£20.66  inc VAT
Mobil Grease 33 Synthetic Aviation Grease 16Kg Pail *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Mobil Grease 33 Synthetic Aviation Grease 16Kg Pail *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Silmid P/N: 
P0210820
No Stock – Typically ships in 33 business days from order date
£689.42 excl VAT
£827.30  inc VAT
Mobil Grease 33 Synthetic Aviation Grease 50Kg Drum *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Mobil Grease 33 Synthetic Aviation Grease 50Kg Drum *MIL-PRF-23827C Type I Amendment 2 *AIMS 09-06-002 *BMS 3-33B Type I
Silmid P/N: 
P0210821
No Stock – Typically ships in 33 business days from order date
£2153.89 excl VAT
£2584.67  inc VAT
Nyco Grease GN 10 1Kg Can *MIL-PRF-23827C Amendment 2 Type I
Nyco Grease GN 10 1Kg Can *MIL-PRF-23827C Amendment 2 Type I
Silmid P/N: 
NYC10001KG
In Stock - 17 Available
£42.61 excl VAT
£51.13  inc VAT
Nyco Grease GN 10 180Kg Drum *MIL-PRF-23827C Amendment 2 Type I
Nyco Grease GN 10 180Kg Drum *MIL-PRF-23827C Amendment 2 Type I
Silmid P/N: 
P1300056
No Stock – Typically ships in 47 business days from order date
£6609.68 excl VAT
£7931.62  inc VAT
Nyco Grease GN 10 6.5Lb Can *MIL-PRF-23827C Amendment 2 Type I
Nyco Grease GN 10 6.5Lb Can *MIL-PRF-23827C Amendment 2 Type I
Silmid P/N: 
P1600607
In Stock - 5 Available
£145.21 excl VAT
£174.25  inc VAT
Nyco Grease GN 10 35Lb Pail *MIL-PRF-23827C Amendment 2 Type I
Nyco Grease GN 10 35Lb Pail *MIL-PRF-23827C Amendment 2 Type I
Silmid P/N: 
P0190030
No Stock – Typically ships in 47 business days from order date
£645.40 excl VAT
£774.48  inc VAT
Nyco Grease GN 10 380gm Cartridge *MIL-PRF-23827C Amendment 2 Type I
Nyco Grease GN 10 380gm Cartridge *MIL-PRF-23827C Amendment 2 Type I
Silmid P/N: 
P0220569
In Stock - 42 Available
£22.77 excl VAT
£27.32  inc VAT
Royco 27 Synthetic Multi-Purpose Grease 6.5Lb Can *MIL-PRF-23827C Type I
Royco 27 Synthetic Multi-Purpose Grease 6.5Lb Can *MIL-PRF-23827C Type I
Silmid P/N: 
ROY270065B
In Stock - 2 Available
£228.24 excl VAT
£273.89  inc VAT
Royco 27 Synthetic Multi-Purpose Grease 35Lb Pail *MIL-PRF-23827C Type I
Royco 27 Synthetic Multi-Purpose Grease 35Lb Pail *MIL-PRF-23827C Type I
Silmid P/N: 
ROY270035L
No Stock – Typically ships in 180 business days from order date
£2665.27 excl VAT
£3198.32  inc VAT